Miley Cyrus' Ex, Justin Gaston, Ties the Knot!

One of Miley Cyrus' ex-boyfriends beat her to the altar!

Former "Nashville Star" contestant/underwear model Justin Gaston -- who famously dated and lived with the then-16-year-old Disney star when he was 20 -- tied the knot over the weekend to actress Melissa Ordway.

Justin, 24, and Melissa, 29, got married during a private ceremony in Atlanta, GA on Saturday.

After the wedding, Melissa tweeted "Very happy and excited to be married! What an amazing weekend filled with lots of family and friends!"

Just Jared Jr. points out that Ordway worked on "The Last Song," which is where Miley met her current fiance, Liam Hemsworth.

It's a small, small world!

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