Kate Mara and Max Minghella

Kate Mara and Max Minghella Credit: Kate Mara, center, and Max Minghella, left, with Oscar Isaac. (Getty Images)

Kate Mara and Max Minghella are back on.

After splitting up this spring, the two actors were getting cozy at an event for their upcoming movie "10 Years" in NYC on Sunday.

"They were very attentive to each other throughout the event," a witness told us of the twosome, who hit up a brunch held at Hotel Chantelle in the flick's honor.

"Kate had her hand in his back pocket for the better part of the afternoon," the spy added.

Also at the Grey Goose-hosted brunch were "10 Years" co-stars (and real-life hubby and wife) Channing Tatum and Jenna Dewan-Tatum.

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Updated 30 minutes ago Suozzi visits ICE 'hold rooms' ... U.S. cuts child vaccines ... Coram apartment fire ... Out East: Custer Institute and Observatory

U.S. cuts child vaccines ... Malverne hit-and-run crash ... Kids celebrate Three Kings Day Credit: Newsday

Updated 30 minutes ago Suozzi visits ICE 'hold rooms' ... U.S. cuts child vaccines ... Coram apartment fire ... Out East: Custer Institute and Observatory

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