Is the bartender actually interested or just looking for tips?

There's this bar I've been going to for over a year now and have slowly become a regular. There's this one bartender that's normally there and I've started to develop a crush on him. One of my friend's boyfriends one day told him I was interested and he said he was interested too and since then he's been giving subtle hints and we've definitely been having a lot more eye contact. I don't have a reason to believe he would be lying but is this also just a ploy to get me to keep coming back and tip more? If he's actually interested, how do I make a move without completely embarrassing myself?

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update: I went back the other day and he asked if one of the drinks were for me and said “it’s on me” when I said yes. But there’s been other things where he’ll directly stare at me when saying things to someone else or one time he made a point to stare directly into my eyes and grab my hand. I’m starting to think he might be actually interested and I think I just need to make a move and find out either way.
Is the bartender actually interested or just looking for tips?
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