G-Eazy

From Gwen Stefani to Miley Cyrus and John Mayer, these pop stars have written breakup songs about other famous people.

Their exes are even dating each other!

From Halsey to Demi Lovato, see all the best Halloween costumes so far.

Halsey appears to have called out ex-boyfriend G-Eazy on 'Saturday Night Live.'

From spot-on tributes to legendary artists to hilarious couple costumes, these are our favorite celebrity Halloween costumes of 2018.

There are some not-so-subtle messages in the singer's latest music video.