Billionaire oil heir callously dumped partner of 10 years for another woman: lawsuit

Texas billionaire Sid Bass abruptly dumped his longtime partner for another woman after allegedly promising to provide for her for life — the latest in what her lawyers portray as a decades-long pattern of the oil heir replacing wives and lovers with new flames already waiting in the wings.Oona Sperr, a New York interior designer who says she spent more than 10 years living with the 84-year-old Bass, is demanding at least $400 million in a bombshell federal lawsuit accusing him of reneging on promises of lifelong financial security and interests in their lavish homes.The complaint, filed Monday in Manhattan federal court, portrays Sperr’s breakup as the latest chapter in what her lawyers call Bass’s history of “marriages, divorces, and repeated infidelities.”“Just as Sid had done to [his first wife] Anne [Hendricks Bass], he left his marriage to [second wife] Mercedes [Tavacoli Kellogg Bass] with another relationship already established,” the suit alleges.Sperr claims her decade-long partnership with Bass began in earnest in January 2014 with an invitation that would prove bitterly ironic.Over lunch at his Manhattan townhouse, Bass allegedly asked her: “How about you never leave?”Sperr says she abandoned her interior design career to manage Bass’s households and accompany him around the world in return for promises of financial support and shared ownership of property they acquired.For more than a decade, they lived in what Sperr dubbed “Bass Land” — a rarefied world that included Manhattan mansions, a sprawling Colorado ranch, a private Gulfstream jet and the Bass family’s 21-mile-long private island off the Texas coast, according to the complaint.Bass allegedly referred to Sperr as “Mrs.Bass” while traveling, bought her a 25-carat diamond for $2.1 million sized for her left ring finger and later gave her a 20-carat emerald for $1 million — the same type of gemstone he allegedly noted he had given each of his previous wives.But ov...