'I used to think that we were forever ever...' The pop stars who have BLASTED their exes in their songs...

What could be more touching than hearing a song written for you? Dating a musician can be VERY romantic, but... breaking up with a musician can illicit a different type of emotion!
From Taylor Swift to Nick Jonas, Selena Gomez to Perrie Edwards, here are 10 artists who didn't hesitate to air their dirty laundry through their music...