Demi Lovato & Taylor Swift: A Timeline of Their Friendship

Demi Lovato caused a whole bunch of hullabaloo when her thoughts about Taylor Swift dropped in an interview with Glamour on Tuesday. In her cover story, she called Swift out for bashing Katy Perry in "Bad Blood" and claimed that celebrity squads (Swift has a pretty infamous one) don't promote healthy body image. Shortly after Lovato's quotes made headlines, she announced she was quitting the music business in 2017.

But this isn't the first time that Lovato has made public comments about Swift. In fact, the two pop singers have an entire history together. Let's take a look at their on-again/off-again relationship: