Should I block my ex and unfollow him?

[Rgurl]

I think you answered your own question. Block him.

I've had exes that I tried to be "nice" with on Facebook and both times it backfired. They continued to message me and follow what I was doing. One waited until I changed my relationship status back to single to try and hit on me again in a way that bordered harassment. In the end I had to block them to keep my sanity.

Like you said, if the two of you remain friends, you can unblock him on cordial terms and go from there. But for the time being, it's best for you both.