I'm going through quite the mental roller coaster with my girlfriend of 7 months and I'd like to get your advice. So basically here's the backdrop: she's a HB8 with a alot of guy friends who initially did the chasing before we started dating. Everything in the relationship was good until 5 months in when I realized she was texting her ex over the span of our relationship and asking him to come over when she was home alone so they could smoke weed. He was making comments like "are you gonna suck my dick for it?" and she counter with a lame excuse like. "Im on my period". I confronted her about it and she said they never ended up meeting. Regardless, I told her she violated my trust in the relationship and I broke up with her. She was devastated, and we eventually got back together a few days later but it was on my own terms, the terms being she cut her Ex's out of her life like I did.
Fast forward to yesterday. She said she was going to be at school from 2-9 pm and couldnt meet up, so I had no problem with it. This morning she left her jacket in my car. I flipped through her pockets and found a taxi cab receipt for 6 pm and another one for 2:30 am on the same day she was supposedly in class. We talked on the phone for about 20 minutes that night as well. Should I bring this up and confront her about or will it make me look beta? Should I just let it slide?