Mark Zuckerberg is now a married man.

The Facebook founder tied the knot to his longtime girlfriend Priscilla Chan today May 19, in Palo Alto, Calif.

The couple met while attending Harvard University and have been together for more than nine years.

The 28-yr-old Billionaire took his company public on Friday and the 27-yr-old Bride graduated from medical school at the University of California, San Francisco, on Monday, the same day Mark celebrated his birthday.

A rep for the couple said Mark designed the ring featuring “a very simple ruby.” The ceremony was held at the couple’s backyard before about 100 close friends and family who all thought they were there to celebrate Priscilla’s graduation.