Where they met: "I Know What You Did Last Summer"
Sarah Michelle Gellar met Freddie Prinze Jr. back in 1997, when the two were filming the horror movie "I Know What You Did Last Summer." At the time, the two were just friends, but their friendship led to dating just three years later in January 2000, per Good Morning America. A little over a year later, the couple got engaged in April 2001, and by September 2002, they were married, according to People. In September 2009, they welcomed a daughter, Charlotte Grace, into the world, and had a son, Rocky James, in September 2012.