Was with this girl for about 6 months. We had our ups and downs, but generally got along well and the sex/physical attraction was amazing. We started "officially" being together a month and a half after I started dating her. For the first couple weeks I was hanging out with her, I was also seeing another girl on the side, which I didn't see as a problem because I wasn't "with" her at the time. Well just recently we were talking about past relationships and I brought it up. She got all mad and wanted to break up over it, because she "can't trust me now", even though we were not even together at the time. She says "if you lied about that, who knows what else you're lying about". The breakup doesn't bother me that much, because I knew deep down we just were not compatible. But I must ask, is this whole "can't trust me now" thing a cover up for something else, like another guy? Any input would be appreciated.