Is Jelena really over? Selena Gomez is trying to distance herself from Justin Bieber. And she is doing all she can to make sure her ex can't contact her.

"[Gomez] changed her phone number," a source told Us Weekly. "She told everyone not to give it to [Bieber]."

WHY DID SELENA REJECT JUSTIN? CLICK HERE FOR DETAILS ...

Gomez reportedly made this decision following her Instagram feud with Bieber last month. After Bieber threatened to delete his Instagram following backlash over Sofia Richie photos, Gomez reportedly wrote back, "If you can’t handle the hate then stop posting pictures of your girlfriend lol – it should be special between you two only."

Bieber then claimed Gomez used him "for attention." And they each reportedly accused each other of cheating. "Selena lost it," the Us source continued. "She can be fragile emotionally and Justin is a major factor."

Jelena Instagram Selena Gomez knew she couldn't handle her lupus diagnosis and drama with Justin Bieber at the same time.

Gomez's main priority is her mental health right now. She canceled the rest of her tour to deal with "anxiety, panic attacks and depression" that are side effects of her lupus diagnosis.

By focusing on herself and changing her phone number, Selena Gomez is trying to move on from Justin Bieber for good. And he may be ready to do the same.

WHY WAS JUSTIN SO MAD ABOUT SELENA'S INSTAGRAM DISS? UPDATE ...

At first, he was still hoping to get back together with his ex. That's why he hung out with numerous women — including Hailey BaldwinSahara RayChantel Jeffries, and Nicola Peltz — without committing to a serious relationship.

But things changed when he started dating Sofia Richie. He couldn't ignore their amazing chemistry, and he realized he didn't want to lose her. He's not sure he wants a major commitment, but he's exploring things with her.

Justin Bieber Sofia Richie Justin Bieber is hoping for a more serious relationship with Sofia Richie.

And, so far, things are going smoothly. She recently gushed to Billboard about their "special relationship." She even got a small cross tattoo to match Bieber's. So it seems Jelena isn't reuniting anytime soon.

DOES SELENA STILL LOVE JUSTIN? HERE'S THE LATEST ...

"Besides hooking up it all started as really good friends so they have a great foundation," a source told E! News last month. "They have not discussed titles yet with each other, just taking it slow. Sofia would like to be exclusive and hopes it will lead into that shortly. She has always had something for Justin."

Do you think Justin Bieber and Selena Gomez will eventually get back together? Let us know your take in the comments section below!