This guy seems interested, but he wont ask for my number?

if there is any sort of ual tension, hell, find a reason to give him your number!! but do it in a casual, nonchalant way. Like as if its really nothing. Just remember not to give him too much attention..guys love hard to get. But...umm...the fist bump thing just throws me off...definitely not something i would do when i flirt, but who knows? maybe its something he does out of habit.