Is he just shy?

I've been talking to this guy who goes to my university for a week or two now. We snap every day and he'll call me too, but he doesn't talk to me much in real life. Even if we're sitting close to each other, we kind of just joke instead of talking like we usually do. I know he likes me because he told me, but I don't know what's up with him just not talking to me.
Is he just shy?
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