Gavin Newsom's former mistress said she and her ex-boss first had sex after she wore a white dress to their friend's wedding and that she ripped every single one of his shirt buttons off during a steamy hotel encounter, she revealed in a tell-all. Ruby Rippey Gibney, the staffer who had an affair with the governor of California in 2007 when he was the mayor of San Francisco, left very little to the imagination in a detailed rundown of their relationship in a Vanity Fair piece published on Tuesday. The 51-year-old provided a timeline of how the two came to know each other and when their physical relationship first bloomed. Both of them attended a wedding on July 2, 2005, where Rippey donned a strapless white dress to a City Hall staffer's nuptials, despite her mother's disapproval of her outfit choice. During the event, she and her now ex-husband and Newsom's former deputy chief of staff, Alex Tourk, mingled with their colleagues as she downed champagne and wine while her dinner 'we...