Justin Bieber, Sofia Ritchie called it quits post one month of 'casual hanging out'

The may-be-couple Justin Bieber and Sofia Ritchie have reportedly called it quits after one month of "casual hanging out and having fun."

According to a source, the duo were never really in a full-fledged relationship, adding, "They were never officially together, but more casual hanging out and having fun," reports E! Online.

"It was super-hot and heavy, and because Justin doesn't want a relationship right now, he wanted to cool things down," told a source.

"It wasn't an intentional cool-off and just sort of happened on its own," it added.

The two have not been photographed together since August 29 in Mexico, where they had gone to celebrate her 18th birthday.

The model daughter of Lionel Richie was linked with the 22-year-old 'Sorry' singer after they were spotted out and about together in Tokyo, Mexico and a lot of other hangout places.