So when they happen, we freak OUT.
Most recently, the two that basically started fan-fiction, Harry and Draco, aka #Drarry, aka Daniel Radcliffe and Tom Felton, had the sweetest reunion we've ever witnessed.
Tom went to support Daniel at his new Broadway show, "The Lifespan of A Fact."
Posing for a photo backstage, Tom posted the pic on his Instagram. "Go see it. He’s fantastic as per @lifespanofafact," he captioned the pic.