OK this is the pig ass guy in me but I like STG's advice...... sort of.
Instead look at this way. When one set of legs close 4 to 5 have the opportunity at opening, sometimes at the same time!
Now normal guy mode:
Hang in there buddy. Chin up, pretty soon it will only be good memories of your relationship with her and while it didn't work out I am sure you learned a lot and grew out of it.