Selena Gomez and The Weeknd appeared to be going strong just last week when they were seen enjoying a number of the rides and attractions at the Universal Studios theme park in Hollywood, California. However, after Gomez reunited with her ex-boyfriend, Justin Bieber, many fans were left scratching their heads.

As fans have likely heard, Gomez and Bieber were spotted together not once, but three times in recent weeks — all while Gomez's boyfriend, The Weeknd, was out of town tending to his ongoing Starboy: Legend of the Fall Tour.

Most recently, the former couple was seen grabbing breakfast with one another before heading to a church service in Los Angeles. As TMZ revealed on Oct. 29, Gomez and Bieber were photographed at a cafe in Westlake Village on Sunday morning.

The outlet also noted that Gomez and Bieber were together at Gomez's Studio City house just last week. After enjoying time with friends, Bieber was seen leaving the home around midnight.

Around the same time, E! News shared a report with readers in which the outlet confirmed that Gomez and Bieber had also attended a church service on Sunday morning.

"Justin has been in constant contact with Selena and they have a great, friendly relationship," an insider told the outlet, adding that Gomez "is trying to not overdo it" with seeing Justin, "as she doesn't want to upset Abel."

The insider went on to reveal that The Weeknd is allegedly okay with the current friendship happening between his girlfriend and her former partner. He also noted that Gomez and Bieber are "just friends" and that "nothing romantic is going on" between them.

"They both have a long history with each other so they will always have a place in their heart for one another," the source added.

Gomez and Bieber have been making headlines in recent weeks due to their newfound friendship and soon, they may be face to face again at the American Music Awards, which are set to take place next month. As fans will recall, Bieber is known to attend the event and Gomez was recently named as a performer.

In other Selena Gomez and Justin Bieber news, the former duo could soon release a new song together.

“Selena and Justin always talked about collaborating when they were together,” a source explained, “and Selena even has about 3 or 4 song fragments stored on her iPad from when they would write together. There is one she really wants to develop and record, but The Weeknd would prefer her to just leave it in the past.”

She’s “kind of married to this one song and she feels like it could be an instant hit,” the source added.