bleeding during intercourse

I have a question when I have sex with a guy I bleed during sex and it only happens with this one guy! I am sexual active with two partners and the other guy we dont have this problem and so my question is i have to have sex that morning before i see the guy with the bleeding problem so that there is no bleeding issues but if i just go see him and we have sex i bleed and i cant tell him I sleep with another person but Im worried why it happens with one and not the other? I need help in figuring out whats going on?

[art04]

Well first off I hope you are practicing safe sex, especially  since there is bleeding which means there could be a tears in the mucosal membrane of the vagina. Now with that being said, the bleeding may be caused by number of things such as not enough lubercation (which can be caused by alcohol of drugs), being to rough during intercourse or well his penis being rather larger. The first thing you should try is using pleny of lubercation (KY jelly), and taking it slow and see if that helps.