After Selena Gomez recently rekindled her relationship with Justin Bieber (again), her longtime close friend Demi Lovato, who had advised her to stay away from her on-and-off boyfriend, reportedly ended the 14-year-old friendship via social media.

Gomez and Lovato have been there for each other since they began their acting career, co-starring in children's television series "Barney & Friends." However, the "Give Your Heart a Break" singer took to her Twitter account on Wednesday, July 2 to let her Hollywood pal know that she does not want anything to do with her over getting back with Bieber.

The former "X Factor" judge posted a photo collage taken from her "Neon Lights" music video. The three pictures of her her in the water read: "Swimming away," "From your bullshit" and "Bye bitch," prompting specualation that Lovato was addressing Gomez. Lovato also wrote the following caption along with a 'V' peace hand sign: "Bye."

Lovato has since deleted her post, but a screenshot is still available via ONTD.

In addition to suspected name-calling, Lovato unfollowed the "Come & Get It" pop star on Twitter.

According to Hollywood Life, Lovato, 21, has always been supportive of her friend entering rehab, as well as dealing with Bieber's constant heartbreaking.

"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 said.

However, the "Really Don't Care" singer, who had previously struggled with her own issues, reportedly does not want to deal with the on-again couple's relationship problems.

"Demi doesn't need any extra drama," the source continued. "She's learned from her own recovery to lose the people that bring her down and Selena is too much of a headache. ... The unfollowing of Selena is sending a message that Demi is pissed. She is sick of Selena's boy-who-cried-wolf mentality."