He might not be ready to talk yet, but followed you because he was curious to see how you were doing. Maybe don’t reach out to him to soon. I don’t think he’s angry if he decided to follow you, but I’m sure he’s still hurt so maybe you should just apologize once more and if you’ve grown from that then tell him. He clearly mustive thought about you in order to go on Facebook and search your name so if you miss him then that’s a good sign. I wouldn’t rush into things, but there might still be hope for you two. Wether that’s keeping a tight friendship, or starting a relationship again from scratch. But don’t cheat next time!