I have recently gotten in a serious relationship and have realy strong feelings for my girlfriend and have tried to be as honest as possible with her about everything.. because I don't want to jeopardize our relationship by being dishonest about anything. I had a relationship go south for this reason in the past. I have told her about everything.. I have been brutally honest telling her about my past as an escort and everything that that entailed. But now I don't know if being honest with her about something that heppened will hurt our relationship more than not telling her could hurt it. What happened is that just a couple nights ago I was at a holiday party with my girlfriends family and my girlfriends sister made a move on me when we were alone.. she told me that my girlfriend told her how big my cock was and how she just wanted to see it and it wouldn't go beyond that.. but you know how long that would last.. right.. but the really stupid part is that she asked me to promise not to tell anyone what she was going to tell me before she told me. And I had no idea what it was going to be about. I just don't know what to do now.. I just don't want to do anything to screw my realtionship up. And in this situation I don't know which is the more dangerous decision.. her sister did seem drunk.. but she might have been acting too.. who knows? What would you do in this situation and why? If I was in her situation I would want to know what my brother did on one hand and on another I wouldn't want to know.. And also.. who knows what the sister might say if she was confronted about it.. she might say I made a move on her or something..