hello, if anyone can offer advice on this i would be so grateful. my boyfriend and i have been having sex for a year and a half. occasionally, he has a kind of irritation on the underside of his penis a day after we have sex. he says it is like a mild rash or abrasion. we have ruled out any kind of sexually transmitted disease. it seemed at first to happen only if i was bleeding at all, but lately it has happened at other times, also. we just can't figure iit out. theories include a hormone thing, a size question (although for along time we thought we fit perfectly), lubrication....i am also not convinced it isn't psychological---it seems to occur especially when things get really really good in the relationship. i am feeling devastated. we have beautiful and intense sex and i don't want either of us to have any negative associations, or to stop having frequent sex. i really need some advice. has anyone anyone ever heard of or had this problem? many thanks.