I am so proud of you Hannah. It gets easier... promise.
When I had a bad breakup, I would always be the one to call and try to get back together even if I was the one who did the breaking up. I told my best friend I was going to call her whenever I had the urge to call him. She was on call 24/7 for a few months and I called her whenever I was picking up the phone to dial him. I think it really helped because she put things in perspective for me. Maybe you can do the same w/ one of your friends.
I know it's difficult to ignore, but his desperate attempts at getting your attention are just that. With the help of your friends and family you will pull through this and find someone who treats you like a star