Melanie says she loves her partner of four years and that she's physically attracted to him. She just hasn't wanted to have sex with him for the past three years.
"It's very frustrating being somebody who used to be so interested in sex and having such a voracious sex life only to not," Melanie, a 27-year-old student in Canada, said. "It affects my self-esteem. It affects my day-to-day existence."