Joe Messina's 'Biggest Loser' Wedding -- STUFFED with Losers 'Biggest Loser' Wedding STUFFED with Losers EXCLUSIVE 5/1/2012 3:00 AM PT

Who said losers can't find love -- TMZ has learned, recent "Biggest Loser" quitter Joe Messina tied the knot earlier this month ... and not only did the entire cast attend ... a former contestant actually officiated!

Sources tell TMZ, the small ceremony took place outside on April 14th at a Michigan park -- only a select number of friends and family were invited ... but the tight list included 12 current and former contestants from Season 13 of "Biggest Loser."

Among the "Biggest Loser" attendees -- Buddy and Mark, who famously walked off the show in protest back in February ... and BL finalists Conda and Jeremy.

We're told Buddy officiated the ceremony, Mark said a prayer, and former contestant Gayle made the flowers. All the food at the reception was made using recipes from the "Biggest Loser" cookbook.

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If you don't remember Joe, it's probably because the 38-year-old truck driver walked off the show in January because he missed his then-fiancee Anita. The walk-off was unrelated to the mass protest a month later.