Though the Mad Men star, 32, and Adrien Brody were spotted at a Memorial Day bash in Malibu and tabloids reported they shared a romantic date in New York, the Oscar-winner laughs off rumors they're an item.
"She's just a friend of mine," Brody, 37, told Hollyscoop Wednesday at the premiere of his new movie Splice. "That's silly."
The actor previously dated actress Elsa Pataky (the couple even got matching "private" rings). The couple ended their two-year relationship in May 2009.