Stage 1: Denial- He didn't break up with you...no he'll call you tomorrow telling you that he loves you.
Stage 2: Anger- How could he do this to you?! Leave you alone after all you've been through! You want to start yelling and punching!
Stage 3: Bargaining- Realizing you still love him and would do anything to have him back. You start saying things like, "Please take me back! I can change!"
Stage 4: Depression- You start to realize that you'll never get back together. You stop eating...you stop sleeping...you stop talking. Some people don't make it passed this stage.
Stage 5: Acceptance- Finally accepting what happened. Realizing it's for the better. Finding the courage to move on.