Justin Bieber and Hailey Baldwin may insist that they're just friends, but they certainly act like a couple! The singer and his rumored model girlfriend recently visited Miami together, and they got caught riding jet skis and hanging out with his younger brother Jaxon Bieber.

In addition to their flirty pics together, the pop star also posted a series of cute photos of them on Instagram. He even calls her "the one and only"! (Um, that definitely won't stop the romance rumors.)

We know that they're close, but it's pretty crazy how close they've been getting to each other recently. Even though Jelena fans are still hoping for a reunion with Selena Gomez, it seems like the only girl Justin wants to spend time with is Hailey. She's his "one and only."

Do you think that Justin and Hailey would make a cute couple? Do you think they're secretly dating? Let us know in the comments!

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