An old friend has contacted me via fbook. We were very close friends indeed during university, shared lots of important times etc etc. When we left uni we stayed in touch, briefly living in the same town at one time. The trouble is we began to fall out quite regularly. Our main issue was that he was in a relationship but started cheating on his bfriend and using me as his alibi. We had a huge row about it and didn't speak for a while. Then he left his bfriend and we became friends again.
Then he began to get very posessive over me (not in a romantic way- we are both gay) to the point where my DP at the time felt really put out and uncomfortable around him.
Finally, he moved to a different town, got a new boyfriend but then started coming to see me ostensibly to visit me and DD but actually, it transpired to cheat on his new boyfriend! After that I avoided his phone calls and eventually never heard from him again. I have not missed him at all. I feel nostalgic for the time that we were good friends but I don't really want to see him again or go into the reasons why I stepped back from the friendship.
He has recently contacted my ex on fbook (ex and I are good friends), she thinks so that he can get back in touch with me. She thinks I ought to contact him as "life is too short" and he is now settled with a DP and seems much more chilled and sensible. I don't actually want to be friends with him again. Am I being really mean?