It’s official: Selena Gomez and Justin Bieber are totally hanging out again! Justin was spotted showing up to a get-together at Selly’s Studio City home on Oct. 22, according to TMZ, and stayed until well after midnight. But don’t worry, Selena/The Weeknd shippers, other mutual friends were also there, and Abel was reportedly fully aware that Justin was at his girlfriend’s house. As a matter of fact, he would have been there himself if he weren’t on tour. What a weird mental image.

Life & Style exclusively learned that Justin first reached out to Sel after she made the bombshell announcement on Sept. 14 that she had undergone a secret kidney transplant this summer because of her battle with the autoimmune disease lupus. The health crisis inspired her ex-boyfriend to apologize for the mistakes he made during their tumultuous relationship.

“He was shocked” by the surgery news, the insider said. “He called [Selena’s mom] Mandy [Teefey] to find out what was going on, and said he wanted to be there for Selena. Justin told Mandy he’s truly sorry for the way he treated Selena when they were dating and that he’s grown up a lot since then.”

selena gomez justin bieber - getty

Selena and Justin in 2012. (Photo Credit: Getty Images)

The former couple hadn’t spoken in more than a year, but after Selena, 25, caught wind of Justin’s call, the “Same Old Love” songstress decided that it was finally time to put their troubled past behind them for good. “Selena decided it was time to forgive Justin,” said the source. Another source told Life & Style that the Disney Channel alum texted the Biebs and, since then, “they’ve been texting [more], talking, and even making plans to meet up.” It looks like those plans came to fruition at the Sunday night hang-sesh! The report claims that they even hung out one time before, so clearly it wasn’t awkward or uncomfortable.

According to the source, Selena believed the silver lining of her surgery was her reconciliation with Justin. “She’s happy something positive came out of this awful situation with her kidney transplant,” said the insider. “It’s brought her and Justin back together again.”

Since they called it quits, the pair — who began their on-off relationship in 2010 — have both made huge changes in their lives. Selena spent time in rehab to deal with issues including depression and anxiety, while Justin canceled his world tour this summer and rededicated himself to his Christian faith. “They’ve both realized life is too short to hold grudges,” said the source.

Selena “is telling friends she believes she and Justin are adults now and can finally be friends,” added the insider, and so far it seems like she’s right. “Selena doesn’t want to jeopardize her relationship with The Weeknd. But she still cares about Justin as a person and wants to see him. She believes it’s important to forgive.”