Unless you want to just move, I would say start getting used to him.
I can tell you that over time that your feelings will lessen, but yeah, you're going to have your mind on this guy for a while. Honestly, the only thing that you can do is ride through it, because you will eventually get over him, not instantly, not in a month, but you will. It's all about time and patience.
Try going out more and seeing if you can do more things with your friends to keep your mind off him or try seeing other guys.
I can tell you that over time that your feelings will lessen, but yeah, you're going to have your mind on this guy for a while. Honestly, the only thing that you can do is ride through it, because you will eventually get over him, not instantly, not in a month, but you will. It's all about time and patience.
Try going out more and seeing if you can do more things with your friends to keep your mind off him or try seeing other guys.