Dating : Should i stay with my girlfriend?

Dating : Should i stay with my girlfriend?

So me and my girlfriend have been dating for almost a year now and we just got back from college about a month ago (we’re both 20). We dont go to the same college, so we see most of eachother at hom. So far, the summer hasnt been going too well and after a long, painful talk, we decided we should take some time apart (basically breaking up). But the day after we decided that, we were discussing staying together but she was rushing me into a decision and i told her we needed a little bit more time to truly know what we want to do. So a couple hours after that conversation, I decided i wanted to be with her. I went out to the store, wrote her a card and got her favorite candy. I drove to her dads house(both of our parents are divorced btw) she wasnt there. I drove 40 more minutes to her moms house, she wasnt there (i did these things without her knowing). So then I texted her asking where she was and she was staying at her moms bfs house. I told her about what i did and she was really happy and we were gojng to get back tg. But then she told me she had done something. It might not seem that bad but, she started talking to other guys via snapchat only a couple of hours after we decided to take a little bit of time to think. She was talking to a guy who she would always flirt with when we first started dating and multiple others. This really broke my heart and i need some real advice on whether i should give her a chance, or end it. Please help me out id really appreciate it.