Tina Fey's husband, Jeff Richmond, knows the way to his wife's heart is . . . a cheeseburger.

At the October 3 bash for 30 Rock's final season, the show's composer, 51, secured a booth at NYC's Insola and a snack for the actress, 42.

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"He put a centerpiece in front of her so she could eat privately," says a guest.

But for Fey, her spouse of 11 years is more than just a chivalrous escort.

"He stimulates her mind," another source tells Us Weekly of the couple, who share daughters Alice, 7, and Penelope, 14 months. "They could talk for days."

Now that 30 Rock's creator and star is wrapping up her work on the show, she and Richmond are thrilled they'll have more time to spend with each other -- and their little girls.

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"They are all about family now and they love being together," a second insider shares. "They never stop having fun."

This article originally appeared on Usmagazine.com: Tina Fey, Husband Jeff Richmond "Never Stop Having Fun"