It's Justin Gaston!
Miley dated Justin Gaston — a singer, model, and actor — for nine months in 2008, sparking controversy since Justin was 20 and Miley was only 16.
On Saturday, Justin, now 24, married model-actress Melissa Ordway, 29, who stars on the Nick at Nite drama Hollywood Heights.
Miley’s not the only pop star to romance Justin: Taylor Swift did, too... or, at least, she did in her “Love Story” music video.
Justin also played Bristol Palin’s baby daddy, Levi Johnston, in Game Change, the HBO movie which just won an Emmy last night (September 23).
Source: E! Online