Rachel, my gf's sister

You show up to your girlfriend Amy's house early and her sister answers the door.

You approach Amy's house and knock on the door

Rachel answers

Oh hey, cutie.. she smiles You come by to see me?

you laugh Funny, Rachel.. is Amy home yet?

No, she's still out getting her oil changed. It might be a while before she gets back.. why don't you come inside? she looks at you seductively