Selena Gomez and The Weeknd's Relationship Timeline

The source added, "They are still talking and will remain friends. They have been very grown-up about it."

The split doesn't necessarily come as a surprise as SelGo has been spotted hanging out with her ex, Justin Bieber, lately—though sources tell us he had nothing to do with Gomez's breakup.

But before the "Sorry" singer walked back into her life, things with The Weeknd appeared just fine. In fact, they seemed to be getting stronger as a couple after getting together in January. They've vacationed all over the world together, rang in birthdays together, walked the red carpet together and even spent the summer together. Most recently, they were spotted kissing at an event in September.

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