How much one cheats is often dependent on a person’s ability to replace mates. The easier it is to replace people, the less committed they will be to that relationship.
It’s why you see some men never leave their marriages, no matter how badly they are treated. They don’t think they will find a replacement.
It goes for the woman as well, but women have an easier time replacing their mates.
Or simply discarding their mates and then living from alimony, child support, or the largesse of the Nanny State.
Regards,