Infidelity can not be compared to anything since it is horrible but some people end up washing away the pain by revenging and sleeping with the friends of the cheating partner. Is tit-for –tat healthy? Below is what people had to say regarding the issue 

"No it is not. I am a Muslim who considers unfaithfulness as a big sin. However for the sake of revenging, I would rather separate and start new life than going wrong because my partner has done it.”

Abdul Rwarukunda, Driver.