Facebook boss Mark Zuckerberg celebrates the anniversary of his first date with wife Priscilla Chan which took place 16 years ago

Mark Zuckerberg is apparently a doting husband who remembers the little details and important dates.

The Facebook founder took to Instagram to celebrate the 16th anniversary of his first date with wife Priscilla Chan. 

He referred to the day they had their first date as one of the most important days of his life.

He wrote: 

"16 years ago today was one of the most important days of my life. Happy dating anniversary."