>

the taboo is exciting to them, they know its wrong and thats what makes it fun, they care nothing for the pain they might cause.
Eh. I believe you can go on and never cheat on someone else. But to the person you’ve already cheated on, you’ll never not be “the one who cheated” or whatever >

This. The person who cheated may go on to change and better themselves, but they will do that on their own and it sure af won't be with me. And no apology would ever be enough to make it up to me. >

That's fuckin right. >

Done >

There's always the chance a cheater might not cheat in a future relationship. 
But I think the odds of a cheater cheating on the same partner are very high if they got away with it the first time. 
Some people cheat for thrills. Other people cheat to escape the relationship and don't see any other way out. 
Not all cheating is the same, but most of the time, it's dirtbag trashy entitled behavior.