Is it low cl for a girl to proposition a guy for...?

There's this guy I like. We're friends and he's coming over this weekend. I know if I offer him it won't make him my boyfreind. I've never had this experience, and I would like to have it with him. He is a virgin as am I and we are in our late teens. I've wanted this for quite some time but I'm afraid I'll scare him away. How would I go about asking him any way?