Lesbian bed death is a concept in which lesbian couples in committed relationships have less sex than any other type of couple, and generally experience less sexual intimacy the longer the relationship lasts.[1] It is based on 1983 research by social psychologist Philip Blumstein and sociologist Pepper Schwartz, published in American Couples: Money, Work, Sex, which found that lesbian couples reported lower numbers when asked "About how often during the last year have you and your partner had sex relations?"[2] The concept has been criticized for its methodology and because sexual activity decreases for all long-term couples regardless of sexual orientation. It has subsequently been regarded as a popular myth.[3][4][5]