Personally, while I have no sympathy for people who cheat,
Indeed, I feel the very same way and I am a true believer in Karma. My ex cheated and left our kids and I for a guy that after about 6 years together dumped her for another girl and now she is all alone and has asked about there ever being a possibility of there being an "us" again, I tell her in a kind and polite way I don't want to go back and relive the past and we had our time and it is gone, thanks but no thanks! Not about to put myself in that position ever again. Karma baby, Karma!