Here is the guide step by step:

1.- Cry while you remember the great moments you had together
2.- Get drunk and cry more
3.- Realize that you have your freedom again
4.- Get some hobbies and do exercise this will make you feel a lot better.
5.- Date and know new girls, but don't do it trying to forget your crush do it for you, to keep on moving on life because this shit goes fast and if we got stuck it's just a waste of time.