I think many people will cheat, given a particular set of circumstances. It doesn't make them bad people as such. Although I think I would struggle to get together with someone who I knew had cheated. And of course my H has become that person.
I think this is why the 110% commitment and the heavy lifting are so important. If someone comes back in 'too easy' there is a greater risk of lessons not being truly learned and cheating may happen again.
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus