From what I can see, this is just you guys hanging out as friends. If you show signs of liking him (playing with hair, staring at him attentively, focusing your attention on him a lot, etc), then he might get the hint. If not, it would be quite weird for him to ask you out or anything. If you guys are really close friends, he'll ask if he has no one else and just because you guys are friends. It just depends. Have you guys been friends a for a while? Have you just met?