Completely agree with the comments above. Bet the OW will start pursuing her H. And wonder how your H will feel about that. Bet as well that she will start to make demands to your H she didn't do before and true lights will fall. Wonder again if your H will cope with that. Pressure is the end of any romance as we've learned form DB.
What I don't get is how people may feel special with someone who keeps ruining their lives by cheating. Does he think it will be different with him?
You're in my prayers too. Big tide for you to surf but I know you will be the champ. Just hold on to your board. Anyway you know your worthiness, he's about to confirm that too.