Advice needed. What should I do? Does he like me?

I’ve been hanging out with my crush a lot to study (20f and 24m). We are both studying to become veterinarians and the first time I saw him I knew I had a crush. We started to constantly hang out more.

He constantly adjusts himself. I try not to notice but he seems to do that when he sits across from me while we are talking or something. I can defiantly see because I can usually see his whole body when we sit together. He just continues to be himself while talking or studying acting like nothing is wrong. I try to ignore but I can see with my peripheral vision.

Sometimes I can tell he is adjusting but most of the time he is stroking himself for a couple of seconds. He would do this a couple of times when we hang out.

Should I say something or should I look at his crotch because he might notice he is unconsciously doing it? I am interested in having a relationship with him but this habit seems unusual. Does this mean he likes me?
Advice needed. What should I do? Does he like me?
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