it totally depend on the guy and the your “un-intentional” behavior. Honestly, not a single guy will wait for that long and i can put money on that you would not have felt these feelings for him if he had not disappeared. I don’t know why but i am feeling that you gave a lot of “Green signals” to the guy showing that you are considering him for granted.
He asked for a drink and you ignored. Just put yourself in that situation that you asked your close friend (don’t even think about some guy, just a friend) and she ignored your words .. how would you feel? Humiliated? yeah . you should!
He gave you signals and you “un-intentionall” ignored. Seriously, you gave him clear SIGNALS that “dude, get a life, i am not interested in you. go find someone else”.