Was this guy flirting with me?

I told this guy I got a new job working at a museum. But I wasn't sure about it because it's a classy and elegant place. And then he said "well you are classy and elegant" I had a woman tell me the same thing a couple of weeks ago. (she's my friend and she wasn't flirting though). So It's hard for me to tell if the guy who said the same thing was actually flirting with me or not. He and I did sleep together once a couple of years ago.

Was this guy flirting with me?
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