Is he flirting with me?

So I work as an Amazon shopper at Whole Foods, and there’s this guy who works in the deli that I kind of have a crush on. We haven’t talked much expect for just saying hi to each other or sometimes he helps me find stuff that I need in the deli section. Sometimes we just make eye contact and he raises his eyebrows and then neither of us says anything. It’s also really hard to tell because we’re inside a grocery store, so we’re both wearing masks and I can’t really tell if he’s smiling at me, etc. I am really shy and I’m not good with guys at all. I’m 23 and I’ve never had a boyfriend so I have no idea how to flirt! Anyways, this morning as I was coming in to work he said to me “I like your jacket” because I was wearing this really bright pink puffy coat. And then when I walked by him later he said “...and the pink pants too!” in a pretend shocked voice (I was wearing pink tie dye sweatpants...it’s my favorite color lol). Do you think he could be flirting with me? Or was he just being nice?