I’m not a booty call

So there’s this guy who’ll sometimes hmu and be like, “you should come over” or “I miss you, are you busy? Can you hang?” And I think he’s cute and all but he’s like very inconsistent when it comes to him talking/texting me, and I’ve hung out with him once and I really enjoyed it and so did he but I definitely want to be more than just friends. Then when we’re in school he’ll act like he barely knows me or barely wave or even look at me. How do I deal with this?