He immediatley apologized for not calling and it ended up that he had been arrested for a DUI! He asked me if i would still want to go out with him after something like that and he was super embarrased. Sometimes it is not because they just aren't into you!
Did you go out with him anyway? That would be a turn-off for me.
The last bit of conversation I had with this guy was him saying he'd call me and me explaining that I was gonna be super busy for the next couple of weeks and I didn't know when I'd be able to see him again. He responded, "that's ok, I'm not in a hurry." Which almost melted my heart. So, I think it's possible he's trying not to rush me, but I'm doubtful.