Heavens NO you're not a bad person! Don't pay attention to the texts that you get. They don't know the whole story because of course your bf isn't going to tell them that he was a user, and abuser. He abused you!!! He manipulated, controlled, retaliated, and you name it - he did it. He's NOT a nice man. He he also was not supportive. And not he want's you to be supportive of HIM? Just say sorry, but it's too late.
You only have one life, and if you screw this one up, that's it.

So don't feel guilty about leaving him -- you had to for your own sanity!! Please - just let it go! Now start living for YOU. And do NOT jump into another relationship. Wait until you've fully gotten over this one and have had time to grieve -- yes, you're going to grieve the failure of this relationship.
I wish you the very best. I hope everything turns out alright. Please keep posting and letting us know how you're doing. God bless and take care. Hugs, Lee