Whats going on with this guy, does he like me?

Is this guy interested in me, we work at the same company, we text each other stupid stuff and harmless insults, in work any chance he can he comes into our office, yet nobody even knows we have each others numbers and we act like we don't know each other most of the time the other day he hit me over the head with a group of booking slip papers from the office, just messin around, hes always doing stuff like that.