I'm going to assume you responded based on the belief that he was a faithful husband cause dude does not deserve any sympathy. I am glad his fellow brethren or bringing his iwn dirt to the forefront.They are going to suffer. You are going to ruin his marriage and shyt gonna be hard for him. Your wife is gonna suffer too, you are kicking her to the curb, life without you is not going to be easy for her and you know that. Don't make those kids suffer more than they have to. When children are involved you gotta handle things differently. I know you are hurting badly right now and I think you should do what @MeachTheMonster said and collect yourself before you make any rash decisions.
Two messed up people dragging their poor kids into oblivion with no respect for the sanctity of marriage or themselves.