Why won't he kiss me?

[kaylee]

The first time we hung out together it was with a group of people, the second we went to the movies then talked about an hour after we hugged but did not kiss. Then a couple nights ago we went out with the same group and had some drinks. As soon as the guy sitting next to me got up, the guy I like immediately took his seat next to me. The guy I like ended up taking me home because I didn't want to drive after drinking. We again hugged but did not kiss. I'm pretty sure he likes me and everyone I work with seems to think so to because he likes all my pictures and statuses or Facebook. One even noticed that he blushes whenever he's around me and that she can feel our chemistry. We are hanging out again tomorrow but this time alone. So why won't he kiss me already?! Could it be just the way he is? Should I go for it tomorrow?