I've been seeing my boyfriend a while now, and he's the only partner I've had that I've truly enjoyed sex with. But, for whatever reason, I can't seem to orgasm, and it's growing quite frustrating. I seem to feel overstimulated when he goes down on me or uses his hands . . . the closest I think I have gotten is when I'm on top and I lean in in such a way that it stimulates me. But I always "find the spot," and then "lose it" very quickly. Any suggestions?