When is one's sex drive turned on? Is it a gradual thing? Is it sudden? Does it get turned on like a light switch during one's first sexual experience? I was thinking about my celibate single friends who want to stay celibate until marriage. Once someone has a sexual experience, becoming celibate for a long period of time seems very challenging. But, if one had never had a sexual experience, physiologically speaking, would there be the same longing?