I was cheated on and I don't care to know why or how or whatever else. I literally bent over backwards for him and the only thing I got from him was loss. Lots of loss. I lost a lot of friends, status, and everything else in dealing with him. I went no-contact for over four years and it feels great to no longer deal with his constant needy childish behavior or his constant disrespect. Seriously, he acted like I was his mother and at the time treated me like a child. Ugh. My advice -- always review red flag checklists, take notes with every interaction, and get the hell away from those who show malignant NPD traits.