Isabel Woodford
Bloomberg.com
Originally posted September 11, 2026
Vanessa Marin is impressively responsive. The renowned sex therapist and New York Times bestselling author replies immediately to messages — even in the early morning hours. She doesn’t hesitate to reply when asked what issues she encounters most often in her work. While everyone’s sex life is different, she explains, the dilemmas people bring to her tend to be remarkably familiar.
Mostly it’s “things like whether it’s needy to want to feel desired by your partner,” she writes. “But it’s totally reasonable. You want your partner to want you — that’s not clingy, that’s human.”
This isn’t the real Vanessa Marin. It’s a digital twin she created using Delphi AI, a startup backed by Sequoia Capital that specializes in turning experts into chatbots. The bots, which are trained on material supplied by their human counterparts, including books, websites, videos and social media, have proved popular with celebrities including Arnold Schwarzenegger, who’s created a digital replica of his mind.
