Is Selena Gomez making a huge mistake? That's what fans are worried about as she spends more and more time with her ex, Justin Bieber.

For years, the brunette beauty had trouble leaving what many viewed as a toxic relationship. And over the last week it seems she may be falling back into her old ways.

“Justin really wants Selena back,” a source told Us Weekly. “He’s been texting her nonstop and hangs out with her whenever he can.”

Spotted wearing Bieber's New Jersey Devils hockey jersey after watching his game at the L.A. Valley Ice Center on Wednesday night, Gomez hid from the cameras as she got into his car. And it's no surprise she's shying away from flashes. Her family and friends have long felt Bieber doesn't treat her well. And many haven't forgiven him for his previous bad behavior.

Selena Gomez Hides From Photographers After Justin Bieber's Hockey Game Selena Gomez hid from photographers after Justin Bieber's hockey game (photo: Pap Nation / Splash News).

From early 2015 to early 2016 it truly seemed like the volatile relationship was over. Gomez moved on with Zedd. And Bieber started hooking up with Kourtney Kardashian and Hailey Baldwin. But by March 2016 it became clear that Bieber wanted his ex-girlfriend back.

Gomez was spotted at his concert days after he posted a throwback Jelena kissing photo. She also reportedly spent time with Justin in his dressing room after the show.

But even Bieber realized he wasn't emotionally ready for a serious relationship. "I don’t want to put anyone in a position where I feel like I’m only theirs, only to be hurt in the end," the singer told GQ. "Right now in my life, I don’t want to get held down by anything. I already have a lot that I have to commit. A lot of responsibilities. I don’t want to feel like the girl I love is an added responsibility."

Justin Bieber Wants Selena Gomez Back Justin Bieber has wanted Selena Gomez back for a long time (photo: Pap Nation / Splash News).

Once again in 2017 Gomez seemed to make a definitive break from the "Sorry" singer. She dated The Weeknd for 10 months and they seemed to be on a path toward a serious commitment. But some sources claim her new boyfriend didn't trust Bieber.

“He trusted Selena, but he really didn’t trust Justin,” a source told Us. Now Gomez and The Weeknd have split, but insiders insist there's no bad feelings.

Do you think Selena Gomez is making a huge mistake giving Justin Bieber another chance? Let us know your take in the comments section below!