Does he have a thing for me?

There's a guy who I work with, we work at a recreational centre for youths. I've noticed he's been acting different around me when we work together. I'll list a few examples: whenever we talk, he'll make eye contact and then he looks at my lips, he teases me a lot, I've caught him staring at me at times, sometimes he'll smile or make a funny face if we make eye contact across the room, If I'm talking to a coworker about another guy, he'll chime into our conversation with a slick comment, he makes slick comments like "your boyfriend is texting you" whenever my phone goes off with message notifications (I'm single btw) and sometimes he'll give me a quick scan when we're talking. The thing is, he has a girlfriend. I'm just curious, does he have a thing for me?

Hard to say. He could very well be playing you. Are you interested in him?

To be honest, I am...we have a lot in common and we've always had a playful relationship. I know I shouldn't because he's in a relationship.