I've received a message from someone I don't know personally but I do know she's the new wife of an ex-SO of mine from almost 20 years ago! Not spoken to him for years as it all ended a bit badly and we had a fairly good relationship whilst we were together, didn't live together but we were both immature in our 20s and had a few squabbles.
We were together for 2 years then I met my DH (now divorced etc blah blah).
My ex-BF isn't on FB or other social media and a mutual friend of ours who sees them sometimes out and about mentioned ages ago that his wife was on FB and one night I FB stalked and found them. Just had a brief flick through open photo albums, saw it was of ex-BF but left it at that. I was pleased he'd settled down now and had kids and they both seem happily married so I thought good for them and also both our lives have moved on. I'm happily technically single now but dating someone nice for a couple of months which I think is going somewhere.
Anyway - I found out after we broke up that he cheated on me whilst we were together, I didn't think he had - but he told me after we broke up, just confessed and blurted it out and I was quite hurt about this. He would always ring me on my mobile to check I'd got home ok after a night out with my friends but I knew he was checking to see what I was up to. His DF apparently cheated on and physically abused his DM throughout their marriage and he told me this upset him and affected him as they divorced when he was 10 and he had to attend a family court.
So basically the message from the new DW (they've been married I think approx 8 years) is:-
"Hi - hope you don't mind me messaging you. Hope you are ok. I understand you and XXXX dated a few years ago. take care. XXX (her name)"
Anyway what would you do? Reply? Not reply? I don't wish to open up a can of worms or really get into a convo with her.