R&B crooner The Weeknd and his on-off girlfriend of four years, Bella Hadid, have once again called it quits on their relationship.

The breakup comes a year after the pair reconciled.

"They are in different places right now, physically and mentally," a source told E! "Bella is prepping for her fashion week commitments, and Abel is working on his music and his upcoming acting debut."

The source alleges that "distance" was the reason for the recent split. They have not spent quality time together in months.

When they split back in 2016, it was pretty much for the same reasons.

"They still have a great deal of love and respect for each other and will remain friends, but it has been too hard to coordinate their schedules with him finishing and promoting his upcoming album," a source said at the time. "They really tried to make it work."

During that split, The Weeknd dated Selena Gomez for nearly ten months, and Bella reportedly enjoyed a fling with Drake.