Never cheated on no one, been accused multiple times. the thing about it is that all been the same girl, my wife now
Its because she was abused by passed bfs (one actually broke one of her ribs) to the point where she was a broken girl. the rib and the fact she DID get drunk at a party and got used by a drunk guy... a year before we meet.
At first she kept it from me, and when a friend of hers spilled the beans i asked her about it. she cried so hard and confused everything. she promised me she has never drunk a single drop of alcohol since, and she cried and screamed for me to forgive her.
being a christen man (and having converted her) i was rather shocked at this, and quite betrayed she would hide this from me, and disappointed that i wasn't her first time...
But then i looked at her sobbing, and what can i say, i loved her (still do), and simply said, "It was before you meet me, you were a reckless party girl that knew nothing of god. You have obviously repented, meaning i am in no position to judge or to forgive, for there is nothing to forgive" she looked at me and said but i should've told you, you had a right to know, you were always talking about how you liked that i was a virgin, and i wasn't, i'll never forgive myself!
Me, i just kissed her, "No need, I still love you, i'm not mad. Really i'm not"
Year later we were married
and 8 months after that we have a baby boy.
Moral (and relevance to the original post) it does depend on the situation and tone. she didn't cheat on me, i didn't cheat on her, but she kept a very important secret from me, and it still bothers me (but not enough to where i leave her, i mean that's dumb), but i know she wont do it again just by how vehemently she begged. if he said, "Hey. i cheated on you" then that's probably grounds to dismiss him and kick his a-hole outta the room, but he begged and sniffled in forgiveness, then wth keep him, but keep him on a leash.
i'm 24 years old, married my high school sweet heart form 10th grade, been together for a solid 9 years with a child and a home
life gets better girl, always does 
At first she kept it from me, and when a friend of hers spilled the beans i asked her about it. she cried so hard and confused everything. she promised me she has never drunk a single drop of alcohol since, and she cried and screamed for me to forgive her.
being a christen man (and having converted her) i was rather shocked at this, and quite betrayed she would hide this from me, and disappointed that i wasn't her first time...
But then i looked at her sobbing, and what can i say, i loved her (still do), and simply said, "It was before you meet me, you were a reckless party girl that knew nothing of god. You have obviously repented, meaning i am in no position to judge or to forgive, for there is nothing to forgive" she looked at me and said but i should've told you, you had a right to know, you were always talking about how you liked that i was a virgin, and i wasn't, i'll never forgive myself!
Me, i just kissed her, "No need, I still love you, i'm not mad. Really i'm not"
Year later we were married
Moral (and relevance to the original post) it does depend on the situation and tone. she didn't cheat on me, i didn't cheat on her, but she kept a very important secret from me, and it still bothers me (but not enough to where i leave her, i mean that's dumb), but i know she wont do it again just by how vehemently she begged. if he said, "Hey. i cheated on you" then that's probably grounds to dismiss him and kick his a-hole outta the room, but he begged and sniffled in forgiveness, then wth keep him, but keep him on a leash.
i'm 24 years old, married my high school sweet heart form 10th grade, been together for a solid 9 years with a child and a home