It hurts, like f.ck.. I know. I'm actually feeling this right now too. But in my case, it was the difference between us. He wants more freedom, so okay I agreed to let him do anything he's comfortable with as long as it's not cheating. Not getting along with their family or friends well will be such a disadvantage. But in your case, he doesn't even care to fix things but just blocked you on every platform. Even if you beg him or die for him, he wouldn't care. What you can realize here is, try to cut it all between you and him, and move on with life! Good luck.