There are few things that are stable in this life, but one constant has been Freddie Prinze Jr. and Sarah Michelle Gellar's relationship.

That's right, they've been married for almost 18 years — which is approximately 100 years in celeb relationship time — and, honestly, it makes me so happy.
And while it's hard to picture the "early days" of their courtship, Freddie just revealed their origin story in a new interview with Us Weekly.
We all know they met on the I Know What You Did Last Summer set, but the truth is they didn't share that many scenes together — so it was actually another thing that brought them together.
