Oh Deb, I'm so sorry that this guy is trying to make you feel guilty..it sounds like things have been going so well for you (yay for you!).
Percy is right, he is feeling hurt and rejected and he has decided to take that out on you. Humph! You did the right thing, the noble and caring thing, DO NOT let him make you feel guilty. I know you are a wonderful person and this just further demonstrates it.
Keep doing what you are doing, be assertive, firm and try not to let him guilt you out. Hopefully he will respect that and leave you alone. I'm so happy everything else is going well...one day at a time as you said, hope you are feeling better soon deb, you deserve the best.