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Cheating on your spouse may not require another person. That's according to some definitions of infidelity that are beginning to appear in prenuptial agreements.Julia Rodgers, founder and CEO of Hello Prenups, told Business Insider some clients are requesting prenups that expand affairs to include encounters with AI. While she couldn't share specific customer clauses, she shared an example that reflects what's been used in real client agreements:"knowingly and intentionally engaging with an artificial intelligence ("AI") chatbot, virtual companion, avatar, or similar AI-powered system for the primary purpose of establishing or maintaining a romantic or sexual relationship, including but not limited to exchanging sexually explicit messages or images, engaging in sexual roleplay or cybersex, expressing romantic love or exclusivity, or maintaining an ongoing intimate relationship that a reasonable person would consider romantic or sexual in nature."With the loneliness epidemic and the explosive growth of AI companion apps like Replika and EVA AI, people are increasingly turning to chatbots for their emotional, romantic, and sexual needs — including some who are already in intimate relationships with other humans.Lawyers who work on prenups told Business Insider they are beginning to field questions about how AI relationships could be addressed in those agreements. Most had not personally drafted an AI-infidelity provision, though several said the issue was a natural extension of a broader trend of couples redefining cheating beyond sex with another person.While the legal questions remain, one thing's for certain: AI is giving couples one more boundary to define before they say "I do."Redefining 'infidelity' to include AIHelloPrenup handles tens of thousands of prenups a year, a third of which include infidelity clauses, the company says. Rodgers said that while AI infidelity is already being included in prenups, how they will be enforced in court remains to be seen."Physical infidelity is comparatively really easy to define. Emotional virtual infidelity with a chatbot is not," Rodgers said.