Ben and Jen's Romantic Anniversary

Ben Affleck and Jennifer Garner celebrated their ninth wedding anniversary with a romantic, cozy dinner in Michigan near where he's been filming Batman vs. Superman. According to a source at the restaurant, they definitely "paid a lot of attention to each other."

For Jennifer Garner and Ben Affleck, nothing says “happily married” like a steak and seafood dinner.

The down-to-earth actors celebratedtheir ninth wedding anniversary Sunday with a cozy dinner at Bistro 82 in Royal Oak, Michigan — not far from where Affleck, 41, has been filming Batman vs. Superman in Detroit.

“They looked like a great couple. They paid a lot of attention to each other,” a restaurant source tells.

Garner, 42, and her hubby noshed on the French fare for about an hour and a half, ringing up a food bill around $150. The parents of three were both dressed casually (she in a black dress, he in a button-down and jeans) and thanked the bistro’s workers as they left smiling, another diner tells PEOPLE.

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— Dubai One (@DubaiOneTV) October 7, 2014

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