Does my crush like me?

3 weeks ago I attended a seminar from my Uni. The first 2 sessions were online and the last 2 were in person. I was in a group of 4, with 1 other girl and 2 guys. One of the guys, Mark, had trouble writing in our document during the online session so I helped him a bit.

On the first in-person session, Mark was late and sat next to me, as it was the only free seat. He greeted me with a "What's up" and a smile. This was the first time we met in person. During those 2 in person sessions, Mark and I talked a lot, though not about personal stuff. He’d ask me about the seminar, my solo project or proudly show me his perfect quiz score. Initially, I thought he was just being nice because I helped him earlier on the online-session but over those 2 days he kept playfully "teasing" me/joking around.

For example, during a partner exercise, I chose to work with the girl next to me instead of him. He grinned and said, "I didn't want to do the exercise with you anyway." While preparing our group presentation, he joked, "[My name], if I mess up, you got me, okay?" After our presentation, he gave me a fist bump to me for "doing well". He didn't do that with the other 2 group members. I also noticed him looking at me a few times while we sat next to each other but I was too shy to look back at him.

On the last day we talked shortly about our majors. Then he said, "Okay [my name], take care, we'll see each other around," and gave me a fist bump as goodbye.

I found his Instagram account but it‘s private. I tried sending requests with two fake accounts, but he didn't accept. I didn't follow him with my real account because we have no mutual followers so it‘s obvious I stalked him. Plus I don’t like making the first move on a guy anyways. Now, I’m left wondering if he was interested in me or just a really nice guy? If he really liked me, he’d have ask me for my IG or something right? And why did he say "We‘ll see each other around" if he knows we don‘t have any other common classes?

Updates
11 mo
by the way I never saw him after the last class which was 3 weeks ago. I was hoping to bump on him on campus randomly but I didn‘t. Even though I know I’d be super shy if I saw him and probably avoid him. I see his friends like literally every other day in the library or cafeteria though. One time I was in the gym and I saw his car parked there (Most of his classes take place near the gym).
Does my crush like me?
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