Bieber posted this photo of himself and Ed Sheeran on Instagram and Twitter Tuesday with the caption "10."

SALT LAKE CITY — Justin Bieber joined the cryptic number-dropping game Tuesday after posting the same photograph on Instagram three times with the simple caption “10.”

The photo features both Bieber and Ed Sheeran standing in front of a green screen. It was also retweeted by Bieber’s manager Scooter Braun.

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After weeks of Taylor Swift dropping the hint “4.26” on her Instagram leading up to the release of her single “Me!”, fans are theorizing that Bieber is about to drop a single that features a collaboration with Sheeran.

Could Bieber be releasing a new single by May 10? Never say never.