Most Helpful Guy
Don't message him, let him message you. If you message him 1st that will tell him a few things.
1. Sign of Desperation.
2. You was perfectly fine being blocked.
Most Helpful Girl
He's just over it, he doesn't feel the need to have you blocked anymore. That being said, do not message him, if he'll want something, he'll come to you himself. It doesn't mean he wants you back or anything like that. Just let it go, he's your ex.