So I've been seeing this guy for several months now, and we just started sleeping together. I've only been with one other guy and the sex in that relationship was always really amazing. But when I'm sleeping with this new guy, its not bad, just painful, and when I ask him to stop or slow down, it seems like it turns him on more and he goes even harder... afterwards I said something to him and he sort of just laughed it off. I really like this guy and this has been the only issue I've had with him, ever. I don't know if its just we don't have the same style or what, but I definitely don't want to have sex that way again. What should I do?