diff --git a/templates/relationship_one_to_one.tpl b/templates/relationship_one_to_one.tpl
new file mode 100644
index 0000000..b956626
--- /dev/null
+++ b/templates/relationship_one_to_one.tpl
@@ -0,0 +1,34 @@
+{{- define "relationship_to_one_helper" -}}
+	{{- $dot := .Dot -}}{{/* .Dot holds the root templateData struct, passed in through preserveDot */}}
+	{{- with .Rel -}}{{/* Rel holds the text helper data, passed in through preserveDot */}}
+		{{- $varNameSingular := .ForeignKey.ForeignTable | singular | camelCase -}}
+// {{.Function.Name}}G pointed to by the foreign key.
+func ({{.Function.Receiver}} *{{.LocalTable.NameGo}}) {{.Function.Name}}G(mods ...qm.QueryMod) {{$varNameSingular}}Query {
+	return {{.Function.Receiver}}.{{.Function.Name}}(boil.GetDB(), mods...)
+}
+
+// {{.Function.Name}} pointed to by the foreign key.
+func ({{.Function.Receiver}} *{{.LocalTable.NameGo}}) {{.Function.Name}}(exec boil.Executor, mods ...qm.QueryMod) ({{$varNameSingular}}Query) {
+	queryMods := []qm.QueryMod{
+		qm.Where("{{.ForeignTable.ColumnName}}={{if $dot.Dialect.IndexPlaceholders}}$1{{else}}?{{end}}", {{.Function.Receiver}}.{{.LocalTable.ColumnNameGo}}),
+	}
+
+	queryMods = append(queryMods, mods...)
+
+	query := {{.ForeignTable.NamePluralGo}}(exec, queryMods...)
+	queries.SetFrom(query.Query, "{{.ForeignTable.Name | $dot.SchemaTable}}")
+
+	return query
+}
+	{{- end -}}{{/* end with */}}
+{{end -}}{{/* end define */}}
+
+{{- /* Begin execution of template for one-to-one relationship */ -}}
+{{- if .Table.IsJoinTable -}}
+{{- else -}}
+	{{- $dot := . -}}
+	{{- range .Table.FKeys -}}
+		{{- $txt := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table . -}}
+{{- template "relationship_to_one_helper" (preserveDot $dot $txt) -}}
+{{- end -}}
+{{- end -}}
diff --git a/templates/relationship_one_to_one_eager.tpl b/templates/relationship_one_to_one_eager.tpl
new file mode 100644
index 0000000..99fb0cd
--- /dev/null
+++ b/templates/relationship_one_to_one_eager.tpl
@@ -0,0 +1,97 @@
+{{- define "relationship_to_one_eager_helper" -}}
+	{{- $dot := .Dot -}}{{/* .Dot holds the root templateData struct, passed in through preserveDot */}}
+	{{- $varNameSingular := $dot.Table.Name | singular | camelCase -}}
+	{{- with .Rel -}}
+	{{- $arg := printf "maybe%s" .LocalTable.NameGo -}}
+	{{- $slice := printf "%sSlice" .LocalTable.NameGo}}
+// Load{{.Function.Name}} allows an eager lookup of values, cached into the
+// loaded structs of the objects.
+func ({{$varNameSingular}}L) Load{{.Function.Name}}(e boil.Executor, singular bool, {{$arg}} interface{}) error {
+	var slice []*{{.LocalTable.NameGo}}
+	var object *{{.LocalTable.NameGo}}
+
+	count := 1
+	if singular {
+		object = {{$arg}}.(*{{.LocalTable.NameGo}})
+	} else {
+		slice = *{{$arg}}.(*{{$slice}})
+		count = len(slice)
+	}
+
+	args := make([]interface{}, count)
+	if singular {
+		args[0] = object.{{.LocalTable.ColumnNameGo}}
+	} else {
+		for i, obj := range slice {
+			args[i] = obj.{{.LocalTable.ColumnNameGo}}
+		}
+	}
+
+	query := fmt.Sprintf(
+		"select * from {{.ForeignKey.ForeignTable | $dot.SchemaTable}} where {{.ForeignKey.ForeignColumn | $dot.Quotes}} in (%s)",
+		strmangle.Placeholders(dialect.IndexPlaceholders, count, 1, 1),
+	)
+
+	if boil.DebugMode {
+		fmt.Fprintf(boil.DebugWriter, "%s\n%v\n", query, args)
+	}
+
+	results, err := e.Query(query, args...)
+	if err != nil {
+		return errors.Wrap(err, "failed to eager load {{.ForeignTable.NameGo}}")
+	}
+	defer results.Close()
+
+	var resultSlice []*{{.ForeignTable.NameGo}}
+	if err = queries.Bind(results, &resultSlice); err != nil {
+		return errors.Wrap(err, "failed to bind eager loaded slice {{.ForeignTable.NameGo}}")
+	}
+
+	{{if not $dot.NoHooks -}}
+	if len({{.ForeignTable.Name | singular | camelCase}}AfterSelectHooks) != 0 {
+		for _, obj := range resultSlice {
+			if err := obj.doAfterSelectHooks(e); err != nil {
+				return err
+			}
+		}
+	}
+	{{- end}}
+
+	if singular && len(resultSlice) != 0 {
+		if object.R == nil {
+			object.R = &{{$varNameSingular}}R{}
+		}
+		object.R.{{.Function.Name}} = resultSlice[0]
+		return nil
+	}
+
+	for _, foreign := range resultSlice {
+		for _, local := range slice {
+			{{if .Function.UsesBytes -}}
+			if 0 == bytes.Compare(local.{{.Function.LocalAssignment}}, foreign.{{.Function.ForeignAssignment}}) {
+			{{else -}}
+			if local.{{.Function.LocalAssignment}} == foreign.{{.Function.ForeignAssignment}} {
+			{{end -}}
+				if local.R == nil {
+					local.R = &{{$varNameSingular}}R{}
+				}
+				local.R.{{.Function.Name}} = foreign
+				break
+			}
+		}
+	}
+
+	return nil
+}
+	{{- end -}}{{- /* end with */ -}}
+{{end -}}{{- /* end define */ -}}
+
+{{- /* Begin execution of template for one-to-one eager load */ -}}
+{{- if .Table.IsJoinTable -}}
+{{- else -}}
+	{{- $dot := . -}}
+	{{- range .Table.FKeys -}}
+		{{- $txt := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table . -}}
+		{{- template "relationship_to_one_eager_helper" (preserveDot $dot $txt) -}}
+	{{- end -}}
+{{end}}
diff --git a/templates/relationship_one_to_one_setops.tpl b/templates/relationship_one_to_one_setops.tpl
new file mode 100644
index 0000000..e03803d
--- /dev/null
+++ b/templates/relationship_one_to_one_setops.tpl
@@ -0,0 +1,130 @@
+{{- define "relationship_to_one_setops_helper" -}}
+	{{- $dot := .Dot -}}{{/* .Dot holds the root templateData struct, passed in through preserveDot */}}
+	{{- with .Rel -}}
+		{{- $varNameSingular := .ForeignKey.ForeignTable | singular | camelCase -}}
+		{{- $localNameSingular := .ForeignKey.Table | singular | camelCase}}
+// Set{{.Function.Name}} of the {{.ForeignKey.Table | singular}} to the related item.
+// Sets {{.Function.Receiver}}.R.{{.Function.Name}} to related.
+// Adds {{.Function.Receiver}} to related.R.{{.Function.ForeignName}}.
+func ({{.Function.Receiver}} *{{.LocalTable.NameGo}}) Set{{.Function.Name}}(exec boil.Executor, insert bool, related *{{.ForeignTable.NameGo}}) error {
+	var err error
+	if insert {
+		if err = related.Insert(exec); err != nil {
+			return errors.Wrap(err, "failed to insert into foreign table")
+		}
+	}
+
+	{{if .Function.OneToOne -}}
+	oldVal := related.{{.Function.ForeignAssignment}}
+	related.{{.Function.ForeignAssignment}} = {{.Function.Receiver}}.{{.Function.LocalAssignment}}
+		{{if .ForeignKey.ForeignColumnNullable -}}
+	related.{{.ForeignTable.ColumnNameGo}}.Valid = true
+		{{end -}}
+	if err = related.Update(exec, "{{.ForeignKey.ForeignColumn}}"); err != nil {
+		related.{{.Function.ForeignAssignment}} = oldVal
+		return errors.Wrap(err, "failed to update local table")
+	}
+	{{else -}}
+	oldVal := {{.Function.Receiver}}.{{.Function.LocalAssignment}}
+	related.{{.Function.ForeignAssignment}} = {{.Function.Receiver}}.{{.Function.LocalAssignment}}
+	{{.Function.Receiver}}.{{.Function.LocalAssignment}} = related.{{.Function.ForeignAssignment}}
+	if err = {{.Function.Receiver}}.Update(exec, "{{.ForeignKey.Column}}"); err != nil {
+		{{.Function.Receiver}}.{{.Function.LocalAssignment}} = oldVal
+		return errors.Wrap(err, "failed to update local table")
+	}
+	{{end -}}
+
+	if {{.Function.Receiver}}.R == nil {
+		{{.Function.Receiver}}.R = &{{$localNameSingular}}R{
+			{{.Function.Name}}: related,
+		}
+	} else {
+		{{.Function.Receiver}}.R.{{.Function.Name}} = related
+	}
+
+	{{if (or .ForeignKey.Unique .Function.OneToOne) -}}
+	if related.R == nil {
+		related.R = &{{$varNameSingular}}R{
+			{{.Function.ForeignName}}: {{.Function.Receiver}},
+		}
+	} else {
+		related.R.{{.Function.ForeignName}} = {{.Function.Receiver}}
+	}
+	{{else -}}
+	if related.R == nil {
+		related.R = &{{$varNameSingular}}R{
+			{{.Function.ForeignName}}: {{.LocalTable.NameGo}}Slice{{"{"}}{{.Function.Receiver}}{{"}"}},
+		}
+	} else {
+		related.R.{{.Function.ForeignName}} = append(related.R.{{.Function.ForeignName}}, {{.Function.Receiver}})
+	}
+	{{end -}}
+
+	{{if .ForeignKey.Nullable}}
+	{{.Function.Receiver}}.{{.LocalTable.ColumnNameGo}}.Valid = true
+	{{end -}}
+	return nil
+}
+
+		{{- if or (.ForeignKey.Nullable) (and .Function.OneToOne .ForeignKey.ForeignColumnNullable)}}
+// Remove{{.Function.Name}} relationship.
+// Sets {{.Function.Receiver}}.R.{{.Function.Name}} to nil.
+// Removes {{.Function.Receiver}} from all passed in related items' relationships struct (Optional).
+func ({{.Function.Receiver}} *{{.LocalTable.NameGo}}) Remove{{.Function.Name}}(exec boil.Executor, related *{{.ForeignTable.NameGo}}) error {
+	var err error
+
+	{{if .Function.OneToOne -}}
+	related.{{.ForeignTable.ColumnNameGo}}.Valid = false
+	if err = related.Update(exec, "{{.ForeignKey.ForeignColumn}}"); err != nil {
+		related.{{.ForeignTable.ColumnNameGo}}.Valid = true
+		return errors.Wrap(err, "failed to update local table")
+	}
+	{{else -}}
+	{{.Function.Receiver}}.{{.LocalTable.ColumnNameGo}}.Valid = false
+	if err = {{.Function.Receiver}}.Update(exec, "{{.ForeignKey.Column}}"); err != nil {
+		{{.Function.Receiver}}.{{.LocalTable.ColumnNameGo}}.Valid = true
+		return errors.Wrap(err, "failed to update local table")
+	}
+	{{end -}}
+
+	{{.Function.Receiver}}.R.{{.Function.Name}} = nil
+	if related == nil || related.R == nil {
+		return nil
+	}
+
+	{{if .ForeignKey.Unique -}}
+	related.R.{{.Function.ForeignName}} = nil
+	{{else -}}
+	for i, ri := range related.R.{{.Function.ForeignName}} {
+		{{if .Function.UsesBytes -}}
+		if 0 != bytes.Compare({{.Function.Receiver}}.{{.Function.LocalAssignment}}, ri.{{.Function.LocalAssignment}}) {
+		{{else -}}
+		if {{.Function.Receiver}}.{{.Function.LocalAssignment}} != ri.{{.Function.LocalAssignment}} {
+		{{end -}}
+			continue
+		}
+
+		ln := len(related.R.{{.Function.ForeignName}})
+		if ln > 1 && i < ln-1 {
+			related.R.{{.Function.ForeignName}}[i] = related.R.{{.Function.ForeignName}}[ln-1]
+		}
+		related.R.{{.Function.ForeignName}} = related.R.{{.Function.ForeignName}}[:ln-1]
+		break
+	}
+	{{end -}}
+
+	return nil
+}
+{{end -}}{{/* if foreignkey nullable */}}
+{{- end -}}{{/* end with */}}
+{{- end -}}{{/* end define */}}
+
+{{- /* Begin execution of template for one-to-one setops */ -}}
+{{- if .Table.IsJoinTable -}}
+{{- else -}}
+	{{- $dot := . -}}
+	{{- range .Table.FKeys -}}
+		{{- $txt := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table . -}}
+		{{- template "relationship_to_one_setops_helper" (preserveDot $dot $txt) -}}
+	{{- end -}}
+{{- end -}}
diff --git a/templates_test/relationship_one_to_one.tpl b/templates_test/relationship_one_to_one.tpl
new file mode 100644
index 0000000..fbced51
--- /dev/null
+++ b/templates_test/relationship_one_to_one.tpl
@@ -0,0 +1,76 @@
+{{- define "relationship_to_one_test_helper"}}
+{{- $dot := .Dot -}}
+{{- with .Rel}}
+func test{{.LocalTable.NameGo}}ToOne{{.ForeignTable.NameGo}}_{{.Function.Name}}(t *testing.T) {
+	tx := MustTx(boil.Begin())
+	defer tx.Rollback()
+
+	var foreign {{.ForeignTable.NameGo}}
+	var local {{.LocalTable.NameGo}}
+	{{if .ForeignKey.Nullable -}}
+	local.{{.ForeignKey.Column | titleCase}}.Valid = true
+	{{end}}
+	{{- if .ForeignKey.ForeignColumnNullable -}}
+	foreign.{{.ForeignKey.ForeignColumn | titleCase}}.Valid = true
+	{{end}}
+
+	{{if not .Function.OneToOne -}}
+	if err := foreign.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+
+	local.{{.Function.LocalAssignment}} = foreign.{{.Function.ForeignAssignment}}
+	if err := local.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+	{{else -}}
+	if err := local.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+
+	foreign.{{.Function.ForeignAssignment}} = local.{{.Function.LocalAssignment}}
+	if err := foreign.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+	{{end -}}
+
+	check, err := local.{{.Function.Name}}(tx).One()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	{{if .Function.UsesBytes -}}
+	if 0 != bytes.Compare(check.{{.Function.ForeignAssignment}}, foreign.{{.Function.ForeignAssignment}}) {
+	{{else -}}
+	if check.{{.Function.ForeignAssignment}} != foreign.{{.Function.ForeignAssignment}} {
+	{{end -}}
+		t.Errorf("want: %v, got %v", foreign.{{.Function.ForeignAssignment}}, check.{{.Function.ForeignAssignment}})
+	}
+
+	slice := {{.LocalTable.NameGo}}Slice{&local}
+	if err = local.L.Load{{.Function.Name}}(tx, false, &slice); err != nil {
+		t.Fatal(err)
+	}
+	if local.R.{{.Function.Name}} == nil {
+		t.Error("struct should have been eager loaded")
+	}
+
+	local.R.{{.Function.Name}} = nil
+	if err = local.L.Load{{.Function.Name}}(tx, true, &local); err != nil {
+		t.Fatal(err)
+	}
+	if local.R.{{.Function.Name}} == nil {
+		t.Error("struct should have been eager loaded")
+	}
+}
+
+{{end -}}
+{{- end -}}
+{{- if .Table.IsJoinTable -}}
+{{- else -}}
+	{{- $dot := . -}}
+	{{- range .Table.FKeys -}}
+		{{- $txt := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table . -}}
+{{- template "relationship_to_one_test_helper" (preserveDot $dot $txt) -}}
+{{end -}}
+{{- end -}}
diff --git a/templates_test/relationship_one_to_one_setops.tpl b/templates_test/relationship_one_to_one_setops.tpl
new file mode 100644
index 0000000..f78c261
--- /dev/null
+++ b/templates_test/relationship_one_to_one_setops.tpl
@@ -0,0 +1,165 @@
+{{- define "relationship_to_one_setops_test_helper" -}}
+{{- $dot := .Dot -}}
+{{- with .Rel -}}
+{{- $varNameSingular := .ForeignKey.Table | singular | camelCase -}}
+{{- $foreignVarNameSingular := .ForeignKey.ForeignTable | singular | camelCase}}
+func test{{.LocalTable.NameGo}}ToOneSetOp{{.ForeignTable.NameGo}}_{{.Function.Name}}(t *testing.T) {
+	var err error
+
+	tx := MustTx(boil.Begin())
+	defer tx.Rollback()
+
+	var a {{.LocalTable.NameGo}}
+	var b {{.ForeignTable.NameGo}}
+	{{if not .Function.OneToOne -}}
+	var c {{.ForeignTable.NameGo}}
+	{{- end}}
+
+	seed := randomize.NewSeed()
+	if err = randomize.Struct(seed, &a, {{$varNameSingular}}DBTypes, false, strmangle.SetComplement({{$varNameSingular}}PrimaryKeyColumns, {{$varNameSingular}}ColumnsWithoutDefault)...); err != nil {
+		t.Fatal(err)
+	}
+	if err = randomize.Struct(seed, &b, {{$foreignVarNameSingular}}DBTypes, false, strmangle.SetComplement({{$foreignVarNameSingular}}PrimaryKeyColumns, {{$foreignVarNameSingular}}ColumnsWithoutDefault)...); err != nil {
+		t.Fatal(err)
+	}
+	{{if not .Function.OneToOne -}}
+	if err = randomize.Struct(seed, &c, {{$foreignVarNameSingular}}DBTypes, false, strmangle.SetComplement({{$foreignVarNameSingular}}PrimaryKeyColumns, {{$foreignVarNameSingular}}ColumnsWithoutDefault)...); err != nil {
+		t.Fatal(err)
+	}
+	{{- end}}
+
+	if err := a.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+	if err = b.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+
+	for i, x := range []*{{.ForeignTable.NameGo}}{&b{{if not .Function.OneToOne}}, &c{{end}}} {
+		err = a.Set{{.Function.Name}}(tx, i != 0, x)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		{{if .Function.UsesBytes -}}
+		if 0 != bytes.Compare(a.{{.Function.LocalAssignment}}, x.{{.Function.ForeignAssignment}}) {
+		{{else -}}
+		if a.{{.Function.LocalAssignment}} != x.{{.Function.ForeignAssignment}} {
+		{{end -}}
+			t.Error("foreign key was wrong value", a.{{.Function.LocalAssignment}})
+		}
+		if a.R.{{.Function.Name}} != x {
+			t.Error("relationship struct not set to correct value")
+		}
+
+		{{if .Function.OneToOne -}}
+		zero := reflect.Zero(reflect.TypeOf(x.{{.Function.ForeignAssignment}}))
+		reflect.Indirect(reflect.ValueOf(&x.{{.Function.ForeignAssignment}})).Set(zero)
+
+		xrel := x.R
+		if err = x.Reload(tx); err != nil {
+			t.Fatal("failed to reload", err)
+		}
+		x.R = xrel
+		{{else -}}
+		zero := reflect.Zero(reflect.TypeOf(a.{{.Function.LocalAssignment}}))
+		reflect.Indirect(reflect.ValueOf(&a.{{.Function.LocalAssignment}})).Set(zero)
+
+		if err = a.Reload(tx); err != nil {
+			t.Fatal("failed to reload", err)
+		}
+		{{- end}}
+
+		{{if .Function.UsesBytes -}}
+		if 0 != bytes.Compare(a.{{.Function.LocalAssignment}}, x.{{.Function.ForeignAssignment}}) {
+		{{else -}}
+		if a.{{.Function.LocalAssignment}} != x.{{.Function.ForeignAssignment}} {
+		{{end -}}
+			t.Error("foreign key was wrong value", a.{{.Function.LocalAssignment}}, x.{{.Function.ForeignAssignment}})
+		}
+
+		{{if .ForeignKey.Unique -}}
+		if x.R.{{.Function.ForeignName}} != &a {
+			t.Error("failed to append to foreign relationship struct")
+		}
+		{{else -}}
+		if x.R.{{.Function.ForeignName}}[0] != &a {
+			t.Error("failed to append to foreign relationship struct")
+		}
+		{{end -}}
+	}
+}
+{{- if or (.ForeignKey.Nullable) (and .Function.OneToOne .ForeignKey.ForeignColumnNullable)}}
+
+func test{{.LocalTable.NameGo}}ToOneRemoveOp{{.ForeignTable.NameGo}}_{{.Function.Name}}(t *testing.T) {
+	var err error
+
+	tx := MustTx(boil.Begin())
+	defer tx.Rollback()
+
+	var a {{.LocalTable.NameGo}}
+	var b {{.ForeignTable.NameGo}}
+
+	seed := randomize.NewSeed()
+	if err = randomize.Struct(seed, &a, {{$varNameSingular}}DBTypes, false, strmangle.SetComplement({{$varNameSingular}}PrimaryKeyColumns, {{$varNameSingular}}ColumnsWithoutDefault)...); err != nil {
+		t.Fatal(err)
+	}
+	if err = randomize.Struct(seed, &b, {{$foreignVarNameSingular}}DBTypes, false, strmangle.SetComplement({{$foreignVarNameSingular}}PrimaryKeyColumns, {{$foreignVarNameSingular}}ColumnsWithoutDefault)...); err != nil {
+		t.Fatal(err)
+	}
+
+	if err = a.Insert(tx); err != nil {
+		t.Fatal(err)
+	}
+
+	if err = a.Set{{.Function.Name}}(tx, true, &b); err != nil {
+		t.Fatal(err)
+	}
+
+	if err = a.Remove{{.Function.Name}}(tx, &b); err != nil {
+		t.Error("failed to remove relationship")
+	}
+
+	count, err := a.{{.Function.Name}}(tx).Count()
+	if err != nil {
+		t.Error(err)
+	}
+	if count != 0 {
+		t.Error("want no relationships remaining")
+	}
+
+	if a.R.{{.Function.Name}} != nil {
+		t.Error("R struct entry should be nil")
+	}
+
+	{{if .Function.OneToOne -}}
+	if b.{{.ForeignTable.ColumnNameGo}}.Valid {
+		t.Error("R struct entry should be nil")
+	}
+	{{else -}}
+	if a.{{.LocalTable.ColumnNameGo}}.Valid {
+		t.Error("R struct entry should be nil")
+	}
+	{{- end}}
+
+	{{if .ForeignKey.Unique -}}
+	if b.R.{{.Function.ForeignName}} != nil {
+		t.Error("failed to remove a from b's relationships")
+	}
+	{{else -}}
+	if len(b.R.{{.Function.ForeignName}}) != 0 {
+		t.Error("failed to remove a from b's relationships")
+	}
+	{{- end}}
+}
+{{end -}}{{/* end if foreign key nullable */}}
+{{- end -}}{{/* with rel */}}
+{{- end -}}{{/* define */}}
+{{- if .Table.IsJoinTable -}}
+{{- else -}}
+	{{- $dot := . -}}
+	{{- range .Table.FKeys -}}
+		{{- $txt := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table .}}
+{{template "relationship_to_one_setops_test_helper" (preserveDot $dot $txt) -}}
+{{- end -}}
+{{- end -}}