1. She's been with Zuck since college
Although "The Social Network" made it seem as though Zuckerberg's ambition was driven in part by his failures with women, the truth is he and Chan have been dating since their college days at Harvard. They met at a party while waiting in line for the bathroom; Chan later told The New Yorker that she thought Zuckerberg was "this nerdy guy who was just a little bit out there."
2. He offered her a job, she offered him candy
When Zuckerberg left Harvard in 2005 to focus on Facebook full time, he began recruiting classmates for positions at the facebook (as it was then known). According to The Harvard Crimson, Zuckerberg was sitting outside after a campus recruiting session when Chan walked by:
"Hey Priscilla, do you want a job at the facebook?" Zuckerberg asked a passing friend.3. Their relationship has rules
"I'd love a job at facebook," Priscilla Chan '07 responded, offering him a Twizzler.
Author and tech journalist Sarah Lacy has written that Chan has imposed strict rules on her relationship with Zuckerberg -- not because she doesn't trust him, but because he's such a workaholic. One of the top rules: "One date per week, a minimum of a hundred minutes of alone time, not in his apartment, and definitely not at Facebook."
4. She helped spark Zuckerberg's interest in China
Chan, who is Chinese-American, brought Zuckerberg on a trip to China in 2010. (Their holiday included some business meetings, which prompted speculation about Facebook's interests in the Chinese market.) To prepare for the visit, Zuckerberg studied the Chinese language every morning.
5. She's on Facebook
That's a no-brainer, right? According to the publicly available portion of Chan's Facebook page, she's into cooking, photography, learning Spanish, working with kids and visiting warm locales.