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.

Get the latest news and more great videos at NewsdayTV Credit: Newsday

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Get the latest news and more great videos at NewsdayTV Credit: Newsday

Giving back to place that gave them so much ... Migrants' plight ... Kwanzaa in the classroom ... What's up on LI ... Get the latest news and more great videos at NewsdayTV

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