Just a few years back i was caught in an extremely exquistely painful relationship , that ended with me making it out on SSRI medication and dedicated commitment to getting myself back onto at least a functioning level (i ended up spoiling almost two years of my life on account of what happened).This wasn't an ordinary "break up" as in it had tremendous impact on my life thereafter.
Just like the post above says after sometime you will get over it (there are no two ways about it). I understand that any number of people can tell you that everything eases with the passage of time ; but it takes the time it takes i.e everyone has a different time-frame for grieving and adjustment to bereavement , but once the process resolves believe me regular functioning ensues.