My boyfriend is 31 and has some sick problems with his penis and it hurts him he says to have sex with me. We both have been tested for everything (std's) and nothing. He has even went to a dermatologist and they say nothing is wrong. But still no sex and he hurts and say he is afraid to have sex or get hard. What could it bee and how do we take care of this? Is it just me he doesn't want to be with? He says he wants me. Also i see his penis gets red and swollen like but again i know for 100% sure that he is clean i was there at the doctors when the tests where read off so i know but what can it be then?