NICK & MATT

Sports fanatic Nick Lachey, 32, and Arizona Cardinals quarterback Matt Leinart, 23, have each other's backs. When the singer was named Cosmopolitan's Fun Fearless Male in February, Leinart was there. And besides sharing a taste for sports and nightlife, they make time for doing good: Together they paid a visit to the pediatric ward at Cedars-Sinai Hospital.

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