Why do I keep distancing myself from a guy that I like?

This guy (17M) and I have been friends for about 2 years now (since freshmen year), but we’ve only recently gotten actually close.

Since we go to boarding school together, he always waits in front of my dorm so that we can walk to classes / rehearsals / etc. together. We call all night when we study for tests and we talk to each other pretty much every single day. We share personal things to each other, but we aren’t in the same friend group.

Anyway, I keep finding myself distancing myself from him — I’ll leave him on read, talk to other people more than him when he’s also there, and I don’t reach out to him first. I have no idea why I keep doing this though, because I genuinely like him as a person.

This time, I walked with someone else back to their dorm instead of walking back to my dorm (which is close to his) with him, and he just left and went his own way without saying “bye.” I feel like he’s finally “done” with me, and I don’t know how to express to him that I don’t mean to be so distant.
Why do I keep distancing myself from a guy that I like?
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