I've had girls on the go for the past few months, but was only sleeping with one or two at a time. Now one who I had been sleeping with since August called me to tell me that she went to the doctor and has an std, molluscum. Since starting to sleep with her, I dropped one plate and had sex once with a girl in a night club. I told her on the phone that I havent been having sex with anyone but her since the summer, which was true except I forgot the nightclub incident. How much am I obliged to disclose? She really wants exclusivity and this seems to be giving her a new angle. Maybe I said too much already, maybe not enough I told her what I did out of a sense of fairness and maybe to stop her freaking out. Do I mention the nightclub? She's on the phone now... What to do?