Good work, pandora.
Setting and keeping boundaries is hard work. The good news, is that you're taking actions to make a change in your life. It may or may not work out the way you wanted it to, but in the long run, you'll continue to get stronger and gain more clarity on what's acceptable and what's not.
At this stage, actions speak louder than words. Be prepared for him to relapse. Don't forget to do something for yourself. I'm talking about something fun, or pampering or whatever. Something just for you.