Sarah Michelle Gellar marks 13th anniversary with Freddie Prinze Jr. with wedding photo

This 1990s couple is all that! Sarah Michelle Gellar wished husband of 13 years Freddie Prinze Jr. a happy anniversary with a sweet throwback wedding photo and a Roy Croft poem.

"13 years ... Happy Anniversary! 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," wrote the 38-year-old "Buffy the Vampire Slayer" alum on Facebook on Tuesday.

The snapshot features the wedding dress-clad actress dancing with the "She's All That" star, who's barefoot and dressed in an untucked white shirt and pants during their beachside nuptials.

Seemingly responding to the outpouring of congratulations, Prinze, 39, tweeted: "Thx for the love today! Yay us! Hooray and all that crap. Seriously tho, thank'eth."

The actors met while costarring in the 1997 horror film "I Know What You Did Last Summer" and began dating in 2000. They wed in Mexico in 2002 in the midst of a hurricane and a 4.6-magnitude earthquake that forced them to move their nuptials inside.

"We are each other's best friend," Gellar told People when they got married. "He is my first love."

Since then, the couple has collaborated repeatedly professionally, costarring in "Scooby Doo," "Happily N'ever After" and lending their vocals to "Robot Chicken."

They also share two children together, Charlotte Grace, 5, and Rocky James, 2.

Maybe true love still exists in Hollywood after all.

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