So me and my boyfriend do it every once in a while. I'm about 5'5 and athletic build and he's a little stockier(not fat) and he's very strong. We do his version of missionary but he's not very good at it. He doesn't seem to have very much ab power. Doggy I don't feel much because he's not going very deep. I don't like being on top as much because it gets kind of tiring after a good 10 mins. I've never had an orgasm with him either. He seems to finish in 15 mins but I never do. Any advice?