Help please

I told my Recent ex who I love very much that I hate him and wish we never had anything and now he has blocked me off everything. I blocked him off Facebook but he blocked me off everything after I said that. I didn't mean it I was just furious at him cause he was purposely making me jealous. He said he doesn't hate me but that's just sad that I hate him. Now I have no way of telling him I don't hate hin and that I was just mad :( I really shouldn't be talking to him. We hadn't talked for a couple of days and I blew it. I need some advice what to do.