Mark Zuckerberg is a billionaire

Mark Zuckerberg, CEO and founder of Facebook, has married girlfriend Priscilla Chan, who he met while studying at Harvard University.

The couple exchanged vows in a quiet ceremony at home in Palo Alto in California and 28-year-old Mark has updated his Facebook status to 'married'. 

The entrepreneur is one of the 30 richest people in the world with an extimated weath of $19.1 billion, but chose not to have a lavish bash for his big day, with fewer than 100 guests.

But there was a romantic theme with Burdick Chocolate 'mice' served for the wedding breakfast dessert.

Mark and Priscilla enjoyed the whimsical chocolate treats on their first date.

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