Another insider alleges that Gomez is drinking, partying and headed down a very dangerous path ever since her public falling out with Bieber.
Earlier this summer, of course, Gomez gave Bieber a hard time after Justin told his fans to stop harassing new girlfriend Sofia Richie.
Gomez basically told Bieber to shut up and keep his private life private, lest her invite folks to comment on the new woman in his life.
Bieber didn't take kindly to this advice... he deleted his Instagram page... he ignored Selena's attempts to apologize... and the former lovers are now barely speaking.
According to a new Us Weekly report, meanwhile, they may never speak again.
Miley cyrus with buns Justin Bieber: A Timeline of Poontang START GALLERY
The tabloid writes that Gomez “changed her phone number” recently and told "everyone not to give it to" Bieber.
She really wants to make an effort to cut the artist out of her life now. Once and for all.
The fight she had with Bieber in August really exerted a roll on her, a friend says, both emotionally and physically.
“Selena lost it,” says the source. “She can be fragile emotionally and Justin is a major factor."
Now Gomez is at least “focused on her mental health," however, and is trying to use her spat with Bieber as a way to refocus herself, personally and professionally.