I Hate It When Someone Doesnt Text Back

I don't like waiting sometimes. There's this guy i like, but he keeps me waiting most of the time for a reply. Its annoying, but understandable if hes working. Yet I guess I want more contact time. Yet were just getting to know eachother, but he seems really nice. He looks up and tries to read or listen to what ever i like and its cute. Yet there's a little voice in my head telling me all my worst fears. Like hes crazy, or he dosen't like you now or he dosen't want a relationship. Yet i don't know if any of thats true or anything. All i know is hes very nice and fun to talk to. Maybe I'm starting to like him and should just relax