How to achieve ?

We've tried everything. Every position. He even bought a vibrator for me to use during . The only time I've was in my last relationship with and me on top. But we tried on top several times and nothing. When I try to do oral stimulation (with and without vibrator) it only feels very dry and I really don't feel anything. And when I do feel something, its usually very uncomfortable and I have to tell him to stop. is really fun and he's great in bed, but I know it frustrates him that he can't get me to finish, and I only seem to be able to when I do it myself alone. (hes trying to get me to do it in front of him but im just too bashful.) Any tips or advice on how to get there?