Was he still flirting even though he’s a lot older?

Anonymous
I have a classmate who’s at least in his 30s. Im a college student and I’m 21. He’s very intelligent but he kinda has a childlike sense of humor so he easily fits in with everyone in the class. He is kind of conversational so I’ve seen him talking to some of our other classmates but him and I sit on opposite ends of the classroom and only have that one class together.
I have been told often that I’m pretty lol so I rarely fade into the background in any of my classes despite the fact that I’m quiet I still get called out in some way. One day earlier in the semester I had a really pretty dress on and i walked into the section of the building where my class was and the guy was standing at the desk and gazes at me kinda wide eyed but I didn’t take it too seriously and assumed he was staring off into space or something lol.
We kinda started talking because one day I missed class and I saw him in the hallway later and he did a double take and smiled and turned back and waved to me lol.
During class he’ll try to find a subtle way to call me out sometimes. I have a presentation and he asked a question which I considered normal because he’s asked other people questions after their presentation.
Today it was a smaller class and when I walked in he looked at me kinda with a straight face and lowered eyes and asked me to guess how old he was ( they were having a discussion about it with a few other people ) but he asked me to guess. He kinda messed up my name a little which I didn’t take personal because I have less attractive classmates who he knows their names. He also told this one girl ( who’s nice but not rlly pretty ) that she was glowing after a break ( she’s also a lesbian ). Anyways after he asked me that he kinda takes on a serious face and was like “you did a really good job on your presentation by the way” and intensely stares at me which kinda felt weird lol. Also he makes sexual jokes during class and said once that he can get filthy. Is he hitting on me?
Was he still flirting even though he’s a lot older?
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