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November 16th, 2010

Michael Phelps and Brittny Gastineau had an extended date last weekend.

A source close to Gastineau tells Gossip Cop she believes the swimmer and the reality star/designer first hung out on November 6 in Las Vegas at Tao, where Gastineau was celebrating her birthday.

They’ve since been seen together at The Grove and the Mondrian Hotel in Los Angeles.