Is it possible that I like him?

My ex's friend, Let's call him Bob, has recently started really talking to me again. I've never personally met him, and I don't plan on it. I don't really consider him as a close friend..just..some one to talk to when no one else is online. He easily pisses me off from time to time, and I usually end up blocking him a lot. He sometimes smokes weed..and I hate it. I mean, I don't care that HE smokes it..just weed in general. That's pretty much all the back ground information there is.
Just yesterday, we talked a lot. Maybe a good 2-3 hours or randomness. I told him I was going to bed, and he kinda flipped, begging me not to, claiming he was bored. That..doesn't matter though. I stayed on for maybe 10 more minutes, and before I left, he said to get back on today at 6pm ish. For some reason, all day today, I've been looking forward to it. Sitting on the edge of my seat, waiting for him to log on. An hour passed, and he still hasn't logged on. I feel..close to depressed. It's confusing..I

don't feel anything towards him..that I know of anyway. He pisses me off most of the time. But..I don't understand why I feel so down. I would like to say it's just the heat, or even lack of sleep. Hell, it could also be because I've had tons of time to be alone to think about things I don't like. But..the question is, is it possible that I have feelings for him..as more than a friend?

Maybe not, maybe you're just excited? If someone pisses you off and you feel forward to talking/seeing him, it's kind of complicated to explain. If you stare at him when he walks by, always watching him, thinking about him alot, everyday, then yeah, you may like him.

Hope that helped =], this was all I could say ;P
Hope it works out!