You just never know who your college roommate is going to marry. It could benefit you at your own the form of a Justin Timberlake. 

Jessica Biel's college roommate got married over the weekend and invited her longtime friend to celebrate the day with her. Well, who else would Jessica bring than her husband, Justin Timberlake?

During the reception, Justin sat down at the keyboard and did a surprise performance of Senorita, challenged one of the brides to a dance-off then performed Michael Jackson's "Get on the Floor".

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