Courtesy Dustin Giallanza
- A biotech CEO famous for trying to reverse his age was accused of walking out on a cancer-stricken partner.
- Ex-fiancée Taryn Southern alleged that Bryan Johnson emotionally and financially manipulated her.
- Southern said Johnson was coercive and regularly cheated on her during their relationship.
A biotech CEO famous for spending millions to meticulously reverse his age was accused of walking out on an ex-fiancée after a breast cancer diagnosis and serially cheating on her.