Sorry you have been feeling so down. It’s easy to feel that way when your in an environment and climate that makes it hard to do the things that bring you joy and confidence. Fingers crossed that things will start getting better in spring.
I agree with Fogg - fight that thought. Reframe it. I know it’s hard to see it but OW did you a favor. She took a pos out of your life. Your ex has not grown. He was flirting with you several months back and not too long ago you described situations where he was very disrespectful to current wife. I would rather be single and free then with someone treating me the way he does his current wife. Most women and men that are in long term relationships like that end up with cancer or hormonal issues in addition to depression. Weird but true. They become shells of themselves.
Thank her for getting him out of your life.
Look at how popular and warm and interesting you are. People have always been drawn to you because you have something unique and positive about you. You have wisdom and empathy and strength because of what you have been through but also more. Seriously Ginger. Being with him would have destroyed that.
He might have stepped up with daughter. But I’m sure it’s because it’s easier when the kids are grown up and require less direct supervision. Don’t give him that because he doesn’t deserve it.
Anyway - just get through these next couple of months. Your in the trenches right now but it will turn around.
