They married in a gorgeous, beach ceremony in 2002, and today Sarah Michelle Gellar took to Instagram to wish her husband of 13 years, Freddie Prinze Jnr, a very happy anniversary.

"I love you not only for what you are, but for what I am when I am with you," she gushed in the words of poet Roy Croft. "I love you not only for what you have made of yourself, but for what you are making of me."

Actors SMG, 38, and Freddie, 39, married in Mexico – and accompanying the Instagram message, which was posted late last night, Sarah also shared a snap from their Big Day: in it, she can be seen in her gorgeous wedding dress; her blonde hair pulled back into a low bun, with her groom also dressed all in white, gazing lovingly at his new bride.

And following a spate of recent, high-profile splits (Jen and Ben; Megan and Brian; Gwen and Gavin; Khloe and Scott; Zayn and Perrie – 2015 has been ROUGH for matters of the heart), we reckon this duo have now officially restored our faith in celebrity love.

Evidently, their fans agree too. Last night, the messages of congratulations came flooding in. "Wish you the best for the best couple in the world," said one user on Instagram.

"Best couple in Hollywood Happy Anniversary to my two favourite people," stated another.

 

This is how #datenight begins and ends when you have two young kids. Luckily we made it till the end #movienight

A photo posted by Sarah Michelle (@sarahmgellar) on

"You're such an inspiration! Hope you both have many more happy years together," wrote a third user.

Meeting on the set of I Know What You Did Last Summer in 1997, the couple became famous for being cast opposite each other during the late Nineties and early 2000s. They cemented their friendship before they began dating in 2000 – marrying two years later.

They now have two children: a daughter, Charlotte, five, and son, Rocky, two-and-a-half.

As well as the hit I Know What You Did Last Summer, the pair have together starred in She's All That, Scooby-Doo, and Happy N'Ever After.