When reconnecting backfires

I reached out to two friends, who weirdly, ended up working in the same place. The female and I are talking like it hasn't been 20 yrs. The male, married, I lightly "dated", but more like friends, huffily told her he got my message but, "he's a married man", so, of course, he won't respond.

My female friend said, I'm sure it's harmless. She contacted me, too. She's not trying to start an affair. I said hi, and hoped everything was ok with him. Nothing salacious, of course.

I'm embarrassed. Sometimes, don't look back.