Justin Bieber Cuddles Up To Hailey Baldwin, Calls Her 'The One and Only'

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These PDA pics are sure to fuel those romance rumors surrounding Justin Bieber and Hailey Baldwin.

On Sunday, the 21-year-old pop star shared two selfies with the 18-year-old model, writing: "The one and only @haileybaldwin." Does he mean his "one and only"?!

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In addition to these cuddly pics, Hailey -- who is the daughter of Stephen and Kennya Baldwin -- was also spotted with her arms wrapped around Bieber as the two jet skied in Miami, Fla. this weekend.

While the "Baby" singer was canoodling in the Sunshine State, a cryptic message about Bieber appeared in the skyline above New York City. Several onlookers tweeted out pics of some skywriting that read: "Justin Bieber Is a Smileophile."

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What does that even mean? Does he really smile too much?

The Beliebers need answers.

Bieber recently revealed what he's looking for in a girlfriend. Does Baldwin match this description?