Potential after prom hook up or does he have feelings?

I didn’t go to prom this year, but I went to an after party at a friends house. There was a guy there, let’s call him “J,” and we’ve kind of talked to before but it never went anywhere. His prom date was there, but they were only friends. Everyone was drinking, but ”J” stayed sober. I normally don’t drink, so after a couple drinks I was very drunk. Another guy at the party got way too drunk and started to come onto me, but I was uninterested and honestly freaked out. Throughout the night, “J” would ask me if I was doing okay and would put his arm around me and hold me. He didn’t do this to any other girl at the party, even his prom date. He was very kind and was keeping the other guy away from me. At the end of the night, we ended up making out before falling asleep cuddled up together. What does it mean? Was he just trying to hook up or does he have feelings?