Should I block my ex and unfollow him?

[Alison B.]

We dated twice, and he blocked me after the first breakup. I actually got over it pretty quickly because I didn't have to see all his posts and stuff. Out of sight, out of mind kind of thing. We dated again, and we're still friends on fb and following each other on twitter. Would it be immature to block my ex on facebook? I'd rather block him because then a) I can't see anything of his and b) When I get to the point where I'm over him, I can unblock him and we're still friends so I can avoid the awkward moment where I have to refriend my ex...

What do you think? Have you blocked exes? Does it help?