Caught in the act
The wife didn’t elaborate very much on how she felt it was time to leave her husband. She simply said that he was caught cheating and that he needed to go. She didn’t feel hate or betrayed by his act. There was probably trouble at home before he was finally caught in the act.
It’s sad that the husband couldn’t be upfront with his wife and tell her that their relationship wasn’t working out. If you cheat, the ugly spotlight will forever shine on you as the person who ended the relationship, even if it wasn’t salvageable in the first place.