Ex-partner sues billionaire Sid Bass over alleged $50 million promise

Sperr says Bass promised her $50 million when their 10-year relationship ended, then withdrew the offer.

Bass says her lawsuit makes baseless claims and is driven by greed.

The suit also points to his purchase of a $30 million New York penthouse as evidence against his claim of cash-flow problems.

A judge has been asked to dismiss the case.