Dear LIB readers; My wife just threatened to cheat on me...

From a male LIB reader

My wife just caught me cheating on her again and swore to me that next time I do it, she will retaliate by cheating on me. I didn't believe her until she swore with our children and she said this with so much anger and tears. I don't know if I should take her serious. The thought of another man on top of my wife makes my skin crawl so much I want to throw up. I would kill myself if she ever did that. I am panicking, what should I do?