Heart Broken 
She sits up all night reading back all of their conversations.
She can't sleep because she doesn't understand how he could replace her so fast.
It was just yesterday they seemed so close.
She told him all about her life thinking "finally someone can understand." Just when she feels she has someone there for her, he rips her heart right out of her chest and stomps on it, and destroys it. 
Now, she'll walk the halls at school avoiding eye contact from the person she wants the most attention from.
He'll try to talk to her, but he doesn't see how she's dying inside. 
He finally tells her, "Just be happy, things will be okay."
If only he knew.