am I simply taking care of me!
You have the right and responsibility to take care of YOU first. Turning the tables and blaming you is what we addicts/alcoholics often do just so the light of truth is not shining on US. Please don't fall for any 'promises' until/unless he shows you with action that he's changing himself for the better. And only you can judge if he's making positive changes in himself.
We have a Friends and Families of Addicts forum. Lots of people in your situation that would be glad to share their knowledge and experience. Give it a look.
Welcome to SR!