Shawn Mendes and Justin Bieber have been giving fans all the feels this year with with lyrics of their new singles. Mendes' "Wonder" tugged at listeners heart strings, while Bieber's "Lonely" left ...

While the song does address mental health issues -- essentially, the rapper and the topless wonder of the world admit to being bonkers -- it isn't melancholic. Em and Ri sing about OCD, the voices in ...