We bet this gets a little awkward!

Justin Bieber, Selena Gomez, and Kourtney Kardashian all decided to hit up the same church service last night, which normally wouldn't be a problem, except for the fact that The Biebs used to hook up with the eldest K sister!

The "Come & Get It" songstress just completed rehab for her ongoing struggles with anxiety and depression, and JB has been right by her side for the ordeal.

"Justin and Selena are doing great. Their relationship is very special. They have both changed, their lives are so different and it really seems things could work out great this time. Justin realized that he needed to change, reached out for help and is doing very well," a source dished to People.

"The same [goes] for Selena — the second she doesn’t feel well, she seeks help. They have both hugely matured. Justin is very supportive of Selena feeling her best. She came back feeling very empowered. She feels and looks great. She’s still working on new music and is excited about it," the source added.

Who knew that religion could transform such a dysfunctional relationship into a healthy one!