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​Sarah Michelle Gellar posts sweet wedding pic on 13th anniversary

Sarah Michelle Gellar attends the 40th annual People's Choice Awards at Nokia Theatre L.A. Live on Jan. 8, 2014 in Los Angeles.

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Sarah Michelle Gellar posted a sweet throwback wedding photo on Tuesday to mark her 13th wedding anniversary with hubby Freddie Prinze Jr.

She captioned the image with the message: "I love you not only for what you are, but for what I am when I am with you. I love you not only for what you have made of yourself, but for what you are making of me."

Awww ...

Gellar, 38, and Prinze, 39, met on the set of the 1997 film, "I Know What You Did Last Summer" and started dating three years later. They have two children together: Charlotte Grace, 5, and Rocky James, 2.

In an interview with CBS News, Gellar called her children the "greatest gift" anyone has ever given her.

"It's changed my life in every way, shape and form. Every minute of my day is spent thinking about my children, keeping them safe, keeping them healthy," she said. "Before that -- my husband can take care of himself most of the time, my mom can take care of herself most of the time. You can be pretty selfish and then all of a sudden you have children and they depend on you for everything."