Friday Night Lights actress Minka Kelly and How I Met Your Mother star Josh Radnor, who were spotted getting cozy Dec. 4 at the New York Stage and Film Winter Gala, are "dating" a source confirms to In Touch exclusively.

“Josh had his arm around Minka’s chair,” says an eyewitness. “They were laughing and smiling at each other the whole night."

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“Minka kept leaning in and whispering in Josh’s ear,” the eyewitness adds. "They left holding hands!”

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