The 22-year-old "Sorry" hitmaker spent the weekend with Blampied, who was also part of his group during a recent vacation in Hawaii, reported People magazine.
"Every night, she went back to his luxury apartment. They looked like a couple, and she stayed over at his place. She was with him the whole weekend and never left his side," a source said.
The duo partied on Friday at Tape night club and stayed in Saturday night after visiting a spa together and attending the V festival, where Bieber performed.
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