Cheated on

Would you break up with your girl if she had another man over in your home, them sending nudes for god knows how long only found the ones she sent but told me he sent some too after a month, and then claiming they didn’t fuck even though this mf is the type to. It was with her sisters ex bfs cousin. And she tried to say that she wanted to confront him over something that happened to her niece (which was her way of just getting me to think that’s all he was comin over for) that had happened like 2-4 years prior to us being together, she also said that she had nudes on google somehow and that he got them and black mailed her into sending him more.