I do think that once you have been through this kind of devastation and prolong separation it really does curb one from doing it again. I'd imagine that where repeat occurrences do happen, it's probably in the R's that healed too quickly after the A and the significance of the betrayal was never really felt by both parties.
I think so, too. It's an extremely hard life lesson for the unfaithful spouse once they come out on the other side of it. My W is genuinely seeing the hurt she caused me from her betrayal and I do believe even in these early stages she'd never have an affair again, whether it's with me or in her next relationship. Once a cheater, always a cheater definitely doesn't always apply.
The resentment you go through over knowing they had to do so much damage in order to learn something that is so obvious to a faithful spouse is a topic for another discussion.
