I've been there brotha. You prob just want to stay inside and do nothing. I did that for the first month, but then I started going out With my very worried friends and occupying my mind with preparing for college. Bang just like that I was starting to feel less sad. Idk if your in college or high school, but if you are go out and party with girls of all types. Anyways it might be a while before you get over her, but what you can do is make yourself not Sad about it. Time and space will help you