Selena Gomez is reportedly having second thoughts about her split from Justin Bieber, but unfortuantely, she may be far too late.

According to a new report, Gomez, 23, was deeply impacted by the death of her friend, Christina Grimmie, and after doing some life reflecting, she realized she wanted to give her romance with Bieber, 22, another chance. Meanwhile, he's been busy rekindling his reported relationship with 37-year-old Kourtney Kardashian.

“Justin explained that he is quietly seeing Kourtney Kardashian again," an insider told In Touch Weekly on Wednesday, adding that the news left Gomez "enraged."

Bieber and Kardashian began seeing one another last October after she split from her longtime boyfriend, Scott Disick, the father of her three children, Mason, 6, Penelope, 3, and Reign, 1. However, in the midst of their alleged romance, Bieber was also spotted with Gomez, Hailey Baldwin and Nicola Peltz.

While Bieber has been quite the ladies man in recent months, Gomez is said to be determined to win her ex-boyfriend back, and just weeks ago, a source said she wished he had fought harder to keep her after their initial split.

“Justin is so passionate for his work, so passionate when it comes to not doing any photos with fans, so passionate when it comes to gloating he didn’t get hurt when he got in his latest fight. But he was never passionate in keeping Selena’s heart and she hates that she wasn’t important enough for him to make what they had work,” a source told Hollywood Life. “She wishes he would have fought for her like he fights for everything else in his life, with passion. And the fact she thinks she never got that from him makes her always go back and want to help him and that is also why she will always be there for him."

Tags: kourtney kardashian Justin Bieber Selena Gomez