If there is some type of debt that you feel he is responsible for per your divorce decree, I would let your L handle getting him to pay that. Please don't torture yourself by allowing him and his gf to treat you poorly anymore. Please. Don't let them think you are pathetic. I'm not saying you are, just thinking what they might be saying. Pull out your pride, Sun. I know it's in there somewhere. Isn't it? Remember, prime cut.
Wow Jack, quite the interesting little tidbit there, huh? Always learning.
"Success is the sum of small efforts, repeated day in and day out." Robert Collier
"One's best success often comes after their greatest disappointments." Henry Ward Beecher