New couple alert! Page Six is reporting that Billionaire Twitter founder Jack Dorsey is swirling it up with a young, hot, multiracial model and things sound pretty steamy. Reportedly, the tech guru, whose net worth is estimated to be $5.9 billion, is dating Sports Illustrated stunner Raven Lyn Corneil. Dorsey, who is 41-years-old and Raven, 23, were spotted together a the Harper’s Bazaar Icons event earlier this month during New York Fashion Week.