His plan was simple. To cheat and get caught. And to be dumped by his wife. Simple as that.
She caught him. He confessed. She left. That was very easy for him.
To end the relationship, he chose the easiest path. He gave his wife the commonly-accepted-reason to end a relationship. And she did leave.
But what if she hadn’t?
Well that would have been double the fun. The crime would be “accepted”.
Yes you got the message right. But don’t get the messenger wrong.
Majority cheat because they cannot control themselves. And the rest cheat because they want to “control”.