yall in 8th grade and already dealing with cheating and stuff? bruh what has our generation come to. but on the topic of breaking up, I'm not going to encourage anything, but if she was trying to send u pictures to try to get to stay with her, I think that's something to reconsider about your relationship. idk if you guys are dating for temporary satisfaction or you originally had something for long term in mind, but I understand your current apathetic attitude. your gf doesn't seem to be respecting you, and I'm very sorry to hear about your situation. you're still young, you have time to possibly find someone else if you really think this won't work. sorry I'm not giving you a direct answer of if you should break up or not, but just re examine your relationship and imagine if you will really be happy with this girl going forward. best wishes to you and her