My Hot Sister and Her Friend

[Frost]

So anyways, this girl knows I'm 17 and we are pretty comfortable touching each other. Sometimes she'll be in bed and i'll lay next to her with my arm around her, touch her bare stomach, caress her hair, grab and spank her ass and put my hand on her ass crack lol.

If you've done all of this with her having fun and being comfortable, I think you're more than halfway there already!

Try to get isolated with her next time you see her (make some excuse for your sister to go or whatever works) and start with this kind of stuff that you usually do and then escalate further as long as she is going with it.

But let's not forget the fact that you are 17. So you don't want any of you to get in trouble, and keep in mind that she probably thought about it too.