What kind of punishment should be given to those men who cheat on their wives?

What about wives who cheat on their husbands? Shldnt all cheaters be treated the same? Depends on the couple & individual, some want justice others don't! I was in a relationship where I did cheat & by ex wanted me to pay for it but also he was very manipulative & I later found out he was cheating on me too. But he was really fucked off that I was with others but he wanted me to be ok that he was with others. Where's the justice in that?!