Looks like someone has finally stolen Bryan Johnson’s biometrically optimized heart. On Tuesday, the 48-year-old billionaire biohacker announced he’s dating Kate Tolo, the 30-year-old co-founder of his longevity start-up, Blueprint. “Guys … I have a girlfriend,” Johnson wrote in a 1,300-word post on X that doubles as a great reason to bring back the 280-character limit. “Now I know what you’re thinking … how is it possible that anyone would want to be with me?” he continued. “I understand where you’re coming from. I think the answer is: her puzzle piece fits mine.”

Johnson said he and Tolo have been in a relationship for three years now but held off on announcing it publicly until they were sure it was the real deal. Apparently, they met a few years earlier, when she started working at

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