I was in your shoes for waaaaaaay longer than I care to admit.
Read the posts on this site until you're cross-eyed. Also, write a list of the things you enjoy or want to enjoy that don't involve relationships; like hobbies you enjoy, time with friends, personal goals, hot bubble baths, etc... Do those things without regard to him. Just assume he'll spend his weekends getting torn up, make your own plans and carry them out. When you're ready, be honest with your friends so they can support and love you.
When you make the rest of your life into something that makes you happy, you will no longer be able to tolerate his b.s. and will have the strength to leave. Also know that like attracts like -- the more good I put into my life, the more good came (and continues to come) my way.