Cheesyt, I wouldn't put a lot into what your W told you about her dating this OW. Seems like it may be a temp check on her part to see how you respond.
Regardless, it's not something you can control. You can, however, control you and your reactions. I'd keep up your GAL stuff and have an awesome weekend to take your mind off this stuff. I'd bet that your W is trying to get a rise out of you with her recent comments and talks about OW. Don't give it to her.
I'm proud of you for going through the graduation stuff. I know that was a huge deal for you and I'm happy you went! You earned part of that as well and you deserved to be there.
I think the path you pursue now is the one that makes cheesyt happy. Lose the focus on your Ws responses (yeah, I'm one to talk, right?! ). Focus on yourself and get in your exercise. It seems like the exercise is massively beneficial to both of us. Here to support you cheesyt. Keep your head up and keep grinding forward!
Me39 M11 : T13 D9 BD 5/31/16 In House S until 6/21/17 Divorced 10/5/18