Crush is acting distant and sends confusing signals

Hey guys, I'm a female in her early twenties and I have a question (sorry if there are some grammar mistakes, English is not my native language)

So there's this guy I really like in my university that I met some time ago (we are both pretty new there).

At first he would show up where me and my friend (who is also a guy) were sitting and talked to us, I also noticed that he had this really big smile on his face every time.

I thought he liked me as well because two weeks ago (if I'm not mistaken) he came and sat really close to me, and we had a lot of fun talking, I made him and my friend laugh and he sat near me on every beak we had that day, well, everything was fine until the next day, he started to act really distant, he comes as usual before our class starts and shakes my and my friend's hand but only talks for a minute or so and then goes away, he doesn't smile when he sees me anymore, when we have a break he stands far away from me on purpose even when his friend sat next to me one time, and the thing I noticed the most is - he can't make eye contact with me, when we talk he moves his head fast to the side, one time he didn't even show up when me and everyone else went out to the school yard.

What's going on? Why does he give me the impression that he hates me?

I would appreciate everyone who could help me understand this weird behavior and will add more details if needed, thanks in advance.
Crush is acting distant and sends confusing signals
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