The news was announced (where else?) on Facebook, just one day after the company went public. Facebook CEO Mark Zuckerberg married his long time girlfriend Priscilla Chan today – a day after the company finally went public. Mark Zuckerberg (Facebook Founder) posted a simple wedding photograph, showing the couple against a backdrop of plants and small lights on a string. Mark Zuckerberg, 28 and Priscilla Chan, 27 also updated their relationship status to "married." He ditched his trademark hoodie, appearing in a dark suit and tie, while she wore a sleeveless white wedding dress with lace. They have been together more than 9 years since their days at Harvard University, they met during his sophomore year at Harvard University, where Zuckerberg started Facebook as a dorm-room project. Chan graduated this year from medical school at the University of California, San Francisco, according to her Facebook page. The wedding ceremony took place in Zuckerberg’s backyard before fewer than 100 guests, who all thought they were there to celebrate Chan’s graduation. The marriage comes just one day after the company, based in California, made its market debut.