oops... didn't see this post before I responded in your other thread!

Ruby and ID gave you some great advice. Though if I may ask, have you ever sat down with her and expressed your desires outside of in the middle of intimacy? If she's rebuked them, then by all means you're incompatible, and that's not necessarily a bad circumstance. Rather figure it out now than in another 2 yrs.

Take good care, and best of luck in this difficult situation.