Most Helpful Guy
I wouldn't, if I were him.
Most Helpful Girl
Depends on the person. I can't really say for sure without knowing him :/
But I will say this... I blocked my ex on FB after he had said and done some horrible things to me and I will never unblock him. Even when we got back together to give things another try, he stayed blocked. He will always be blocked from my FB and he will never be invited and included into my life ever again in anyway. For me, when you become an ex that means we are done and you are out of my life for good in every way including social media. Your ex may be the same way. :/