I've recently noticed my ex has unblocked me from facebook which surprised me as he really had no reason to unblock me EVER again after I told his recent girlfriend he had been seeing me behind her back, he had told me we was getting back together and things with her were over only to go back to her and block me so I made the decision to tell her what had been going on along with the proof, anyway she took him back for a couple of weeks but eventually ended it with him, he unblocked me as soon as they were over but didn't attempt to contact me, not surprising really seeings as he knew I was pissed but I don't get why he even bothered to unblock me as there was no point and now he has another new girlfriend.
I don't know if to just block him and leave him blocked forever and a day or do nothing?