Myself

This is a poem about a girl who thought a boy was her friend, and she grew really attached to him. I guess if it was anime he would be "senpai", but anyway, she asks him out and he rejects her, or in the poem, leaves her alone in a room. This leads her to 5 years of depression.
5 years later, the two are outside of highschool and are going to the same college. The girl tries again, and asks him out. And though the poem doesn't say it, the boy yells at her and says "I never loved you, I never even consider you a friend" this leads her to kill herself.
THE LESSON IS DON'T BE A FAKE FRIEND