How can I tell if he likes me?

We have a class together at uni. I asked him if he would study with me, via snap, and he agreed.
I don’t talk to him in class, because I am too shy, he already knows that.
He is a very serious guy, and takes studying seriously. Me in the other hand, I was trying to get to know him a little. He didn’t mind telling me about himself, but hardly asked about me. He would go right back into what we were studying. I hardly looked him in the eyes, because I am too shy. Him on the other hand, he looked at me a lot.
He was a bit playful when we we were studying at one point, but still brought us back to focus.

When we were leaving, it turned out we were going to the same building. So, we walked together.

As we were leaving the building we were currently in, he was VERY eager to open the door for me. When we got to our destination, he actually got a bit upset that I didn’t let him open the door, which confused me. So, it laughed it off. I probably should have apologized, but I was actually confused, so I didn’t know how to respond.

So, I am not sure what to think. He doesn’t usually text first, I do, and he takes forever to respond. As if he is waiting a certain amount of time to text back…

He does tend to view my stories fast.

So, what does this all mean? I am having a hard time reading if he likes me or not.

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I thought this site was a nice site, but I guess not. My apologies.
How can I tell if he likes me?
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