"Love is not a victory march - it's a cold and it's a broken hallelujah"

I don't know why I am so incredibly sad or why I have been the way I am lately. I don't know why I am so stressed out. My course load isn't even hard. What came first? The music or the misery? - I can tell you that the music adds to the misery. I don't know. I am so emotionally unstable right now it's ridiculous. I find myself on the verge of tears constantly and I have no explination.

What is wrong with me?