Its your choice but if you have done similar things than you are just as guilty as him. If you both have done things than its clear you don't need to be together. You really need to think about things when you have a clear head. If he wasn't upset with what you did than maybe you should forgive him. He really didn't cheat or anything. I told guys all the time I loved them when I was with my ex fiance. He knew it though. I never hid anything. I am just being honest here. You really have a lot of thinking to do. I would say forgive him. I called a lot of my male friends babe and stuff like that. In this day an age those words get thrown around so much that they really have no meaning anymore. I say he really didn't do anything wrong as long as he didn't sleep with her. If you have proof that he slept with her or something like that than leave but if that is all he did that can be worked through. You have to think what is important to you. To me it sounds like your overreacting big time but that's just my thoughts on it.