Why it's sad: Being on either side of a breakup is hard. You're not sure if you can get back up and you start questioning everything you've every known about love, but then someone new comes along and shows you that everything is going to be OK.
The saddest lyrics: "Tell me I'll be whole again / And hold me by the heart / Tell me it will never end / 'Cause I've begun to think that / I was nothing short of broken"