I've been dating my GF Kristen, for a little over two years now. She has never acted like she might be sleeping around, but about 6 months ago I noticed this name on AIM. I chatted the guy up pretending to be my GF, and it was obvious to me that something wasn't right there. So I did the dumb thing and installed a keylogger. Save me the "You didn't trust her" crap, because that doesn't matter. It appears she cheated on me with this guy, but he lives out in California. I uncovered several conversations between them, and all made my blood boil. I just don't know what to do, but I want to kill this guy. He knows she had a boyfriend, yet he slept with her anyway. I'm certainly going to break up with her... but I need to cave this guy's skull in first. I've talked to him since then via AIM a few times and I've dropped some hints that I'd like to kick his ass. He keeps changes SNs like a puss, so I have to go back to the keylogger everytime to get his new name. She is still talking to him, but she doesn't know that I know. I don't think he has really mentioned it to her. This guy sounds like he is scared of me, so how should I go about this? I'm in the military so I really can't get in trouble without having to face the UMJC which is not very nice. I've been thinking about flying out to California to kick his ass. Should I do that or just keep scaring him?