I went on a first date on Wednesday night with a guy I met on OLD. We matched a few weeks before and had been messaging regularly - lots in common in terms of lifestyle, music, likes, dislikes etc. His profile (Tinder) was quite brief but included reference to the fact he had a 4 year old child. He was smart, funny and seemed keen but not full on. All good and I was actually really looking forward to meeting him (which I never normally do with first dates).
So met on Wednesday and was pleasantly surprised, he was as attractive as his pics and we got on straight away. Had a drink and were talking when conversation got around to his son. And that’s when he said the classic line “there’s something I should probably tell you...” turns out he’s still married (I hadn’t known he ever was). Still living with his ex and going through the “disentanglement” process (his words). When I asked, he said they’d been together a long time.
Having been through a shitty break up a year ago with a narcissist - who, among the many shitty things he did, lied to me about when he and his ex had split up - and having been on Mumsnet for a while and learnt a LOT, this set all of the red flags waving. I basically told him that having been through a lot with my ex, I had to protect myself and that getting into something with him wouldn’t be a good idea. He was apologetic and said he totally understood - he knew he wasn’t ready but he’d wanted to prove to himself there was still life after divorce, hadn’t expected to connect with someone, blah blah. I listened but stuck to my guns, finished my drink and left. Less than an hour after meeting 
He messaged me a bit later apologising for hurting me and being another example of men behaving badly and saying I’d made the right call. Saying he had really enjoyed meeting me and that maybe we could do it again when he was “out the other side.” I replied basically telling him it was a shame because in different circumstances we could’ve been a good match but that it wouldn’t be good for either of us and that we probably shouldn’t be in touch for now as it would just make things worse. He replied saying he understood. Since then he’s vanished off Tinder (maybe deleted the app but probably just unmatched me) but hasn’t blocked me on Whatsapp etc.
I’ve done the right thing haven’t I? I know I have really but god it just sucks and I keep doubting myself and wondering if I should have at least left the communication channels more open. I’ve never walked away like that before and I felt strong and proud of myself at the time but now just feel like crap.