I dont care about girls anymore. Is this normal?

Currently I'm a college freshman and as the college year is ending, I've been focusing a lot on myself. In the beginning of the year college girls we're something awesome to me. I'd wanted to talk to all of them. Now I just look at them and don't really feel a thing. It's not that I'm shy. I just feel that they're kind of a waste of time, and tbh I find most a bit boring. I can't tell whats going on. Am I maturing, or isolating myself. I don't know.
I dont care about girls anymore. Is this normal?
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