Sarah Michelle Gellar and Freddie Prinze Jr. met on the set of the 1997 thriller, I Know What You Did Last Summer and they tied the knot on September 1st, 2002. Now after having known each other for over 20 years and having two kids together, they have lots to celebrate!

CHECK OUT: These are the longest celebrity marriages! 

Sarah Michelle Gellar and Freddie Prinze Jr. celebrate 20th first date anniversary

"20 years ago this week, my friend @realfreddieprinze and I were supposed to have dinner with a mutual friend from out of town. That friend missed her flight, but we decided to still meet and catch up," Sarah started the caption. 

"Now 20 years together, 17 plus married and two kids, we still go to that restaurant for dinner. So thank you @sloaney77 for not showing up for dinner," the actress concluded.

Sarah and Freddie share many film credits 

Sarah and Freddie share a few film credits together in the films Scooby Doo and Scooby Doo 2: Monsters Unleashed (where they play each others love interests "Daphne" and "Fred") as well as Happily N'Ever After and Star Wars Rebels

FIND OUT What Freddie Prinze Jr. is doing today right HERE! 

The happy couple also have two children together! A daughter named Charlotte Grace and a son named Rocky James. We are so happy for these two amazing people and we wish them nothing but continued love and happiness in the future!