Is he hitting on me again?

So I’m this really social n friendly person who cannot NOT stay in touch with friends, old friends because it’s very hard for me to ignore ppl. I am happily married to my college boyfriend and we are having the time of our life!

There was this guy who I was friends with in the past, who had the biggest likes for me and wanted a serious relationship n all that but I was never attracted to him, so I politely turned down. Years later we got back in touch n remain in touch (only via texts) until this day. Lately he has been trying to get friendlier than normal, couple of days ago he said he has this huge crush on somebody from work and wanted to know if I’ve ever experienced it with anybody after marriage n wanted to know my opinion n all that. By the way did I tell you he’s married too with a daughter!

Now my question is, is he getting back to having feelings for me and kind of trying to know my opinion by subtly saying he has a crush on a colleague? Should I try and avoid talking to him henceforth? I can’t talk about this to my husband since he gets annoyed as to why I take such shit from ppl n not ignore them! What do I do? Need help☹️