if the man cheats, it's on him; he can justify it all he wants, but his cheating is of his own accord.
It varies from relationship to relationship.Some men cheat just for sport, while others do it because the woman won't give up the goodies,lol.
you nailed it
he decides to cheat. HE makes the decision to be a selfish, betraying coward instead of dealing with whatever he thinks is missing in his relationship.. HIM or HER...whomever is the cheater is 100% to blame