Jennifer's sexual exploits do not spring from some insatiable desire for sex, she says, but she does derive some pleasure from it. "I'm completely disconnected" during sex, she says. "I shut down. I'm not interested in being present for it. It's not libidinal, it's more like a void."

Instead, Jennifer compares her relationship to sex to the way that a heroin addict feels about heroin. "I do derive pleasure but there's also a punishment that I'm doing to myself. There's a masochistic aspect."

When did her negative obsession with sex begin? »