You're doing great. Enjoy the independence. BTW, your hubby is a major league cake eater. He wants to string you along in case he changes his mind about OW or she changes her mind about him. Honestly, from what I've read of your posts, you're way too quality of a woman to allow yourself to ever be anyone's plan B. Too much life ahead of you to let yourself be treated that way. I'm not saying dump him for good but if he wants to be part of your team then it's YOUR rules he must live by. First, and most important, NO OW'S EVER. No flirting, no nothing. He doesn't even get opposite sex friend privileges because he has proven he's not trustworthy. YOU'RE the one who has the power to decide if this M goes forward, not him.
I think you're doing great. You're realizing that your H is a want and not a need. You're realizing that you can do just fine on your own. That is awesome. That empowers you to become the master of your own fate. Keep it up, you're doing great.