My girlfriend and I have sex quite regularily however I find it nearly impossible to cum when we have some sort of oral or vaginal intercourse, it has happened a couple of times and was stunning, however not recently. I try not to masturbate a lot but I realise that when i do I have a very tight grip, which may have desentisized my penis . I hardly feel anything in missionary and often would lose a strong erection during intercourse. I read on another similar thread that my past may be blocking the orgasm, which makes sense, as a child I was abused sexually, however Im completely over that and dont understand why that still would affect me. Please do help me, It would be greatly appreciated.