Am I being paranoid or did something happen?

So I’ve been casually seeing this guy and as far as I think it’s been going swimmingly. The big “3rd date” was last night and it was great. Conversation was good, physical chemistry was there, a lot of necking. We did not have sex though because I want to get to know each other better first.

So last night we have a great time and he tells me he likes me and is all over me. (We’re both sober, btw) Asks me when we can hang out again etc. He respectfully offers me to let me stay the night since it had gotten rather late and I would have to take the subway alone all the way downtown. I reluctantly agree and true to his word he is a gentleman the entire night and it was really nice actually. We kissed some more, he goes on about how much he likes me and wants to see me again.

The next morning we wake up and things are kind of rushed. He’s running late to something and I have to get back to campus to do homework. Anyway, he asks again if he can see me soon but I don’t read it as being as enthusiastic this time. (maybe he’s not a morning person?) We walk to the subway together and it’s crowded and chaotic due to a mad influx of people. Despite this chaos and him running a little late, I was a little disappointed when he said “bye” without even giving me a peck on the cheek! What gives?

This guy was going on about how into me he is. Could something have happened in his sleep or that uneventful 15 minute walk to the subway to completely change his mind? We have tentative plans to hang out this week but for some reason I’m nervous. He’s told me before that he was a “late bloomer” and inexperienced with women and due to this sometimes makes faux pas. But I’m just a little surprised he didn’t at least give me a friendly peck after his passionate behavior and indication of interest. Maybe I’m just being paranoid?