On last night's Watch What Happens Live, Demi Lovato broke her silence and discussed her recent falling out with Selena Gomez. Inquiring minds want to know what happened with these two ex besties!!!

During the always interesting Plead the Fifth segment, host Andy Cohen asked the "Skyscraper" singer about unfollowing Gomez on Twitter and if there was really something to the story.

"I think it's just one of those things where people change and where people grow apart," said the 21-year-old.

After Lovato unfollowed Gomez last month, there's been a great deal of speculation about what went wrong in the speculated former friendship. Around the same time, Demi also tweeted out, "Swimming away from the bullsh-t bye b-tch."

Ouch!