Can't wait to spend 25 more yrs: Gates to wife on 25th anniversary

World's second richest person Bill Gates took to Twitter on Tuesday to wish his wife Melinda Gates on their 25th wedding anniversary. "I can't wait to spend 25 more years laughing together," wrote Bill. Earlier, Melinda had shared a photo from their wedding while tweeting, "Happy anniversary, @BillGates! Twenty-five years and three kids later, we're still laughing this hard."