What-do you thnk hes lying??

There is always the slight possibility that he could be telling the truth (I’ve met girls that would do something like what he has accused this girl of). But more than likely, he’s a lying piece of shit playing you both. Has he shown any “red flags” lately that could also lead you to think he’s cheating? Such as being vague about plans, staying out late, getting defensive when you accuse of him of cheating, ect.?

Regardless, you are fortunate in this situation. Most girls find out about the “other girl” by snooping emails, texts, and completely violating their partners privacy. But this girl contacted YOU? It’s an unlikely coincidence. Maybe he’s been feeding her the same bullshit story, and claiming YOU are an ex girlfriend.

Based on what you said, no one can prove he is lying or cheating. We don’t know enough about what’s going on with you guys. But you should investigate. bleh is right, find out more about this girl, ask people who know or have known your boyfriend or this chick. Get an an unbiased explanation to avoid lies.