No Friends Left! Demi Lovato Unfollows Selena Gomez On Twitter, Allegedly Called Her A ‘B*tch!'

She ditched pals Taylor Swift and Kylie and Kendall Jenner over drama with her on-again boyfriend, Justin Bieber— and now it seems Selena Gomez has lost her best and oldest friend, Demi Lovato.

According to reports, Lovato— who starred with Gomez, 21, in children’s show Barney when they were just tots—stopped following the troubled “Come & Get It” starlet on Twitter July 2.

She also allegedly tweeted and deleted a cryptic, angry post.

"Swimming away from the bullsh*t bye b*tch," the “Neon Lights” singer, 21, is believed to have said.

The pair has a long history of feuding.

“We’ve been through a lot together, we’ve had periods of times we here we grew apart and we just didn’t really talk,” Lovato admitted in 2013.

According to Hollywood Life, Lovato, who recently celebrated two years clean and sober, now believes Gomez is a “headache” she’s better off without.

“Demi tried to help Selena with her substance problems and also getting rid of Justin from her life and it is apparent Selena refused to listen to Demi‘s advice,” a source told the site. (Gomez entered rehab for what RadarOnline.com exclusively learned  was a drinking and drug problem in January, but she left treatment just two weeks after her arrival and continued partying.)

“Demi doesn’t need any extra drama, she’s learned from her own recovery to lose the people that bring her down and Selena is too much of a headache.”