Be busy. keep yourself busy and time will surely pass by so quickly. Acquire a new hobby, enroll in short courses or do anything you like. If you just sit there and wait for October to come, it will be like waiting a lifetime..
Your ex said he have to think about it!!! this guy at your school go see where it leads and give your ex time, obviously your ex has to think if he wants to date you again, it's time to move forward..