Contacted by ex boyfriend from 20 years ago. Do I ignore or email b&gger off

[PugMummy]

I had the weirdest email via Facebook. A boyfriend I went out with 20 years ago contacted me to say he was sorry he was selfish and brining up loads of things that I had actually forgotten about. He was a twat and obviously still is but I've never really given him another thought. I'm so annoyed that he's going through some kind of emotional clear out (he's going through divorce apparently) and has contacted me after forever and brought up all this stuff. I'm in 2 minds wether to email back telling him that it's even more selfish to contact someone after 20 years and dump all this stuff back up again, or just ignore him completely. I'm very happily married I should add and have no intention of revisiting him or anyone else. What do you think?

[NotMyPenguin]

If you're not getting anything out of the interaction, ignore.

Just because he's said sorry (or made excuses) doesn't mean you're obliged to facilitate his 'emotional journey' in any way.

If that makes sense!