I posted back in January about how "Jeri" and her partner had adapted tantra to a lesbian relationship, and this started a correspondence with another reader who got me looking into the research on the differences between gay and straight sex, particularly the differences in terms of frequency, duration, orgasms, and satisfaction.
Let's start with frequency and duration. A major study in the 80s found that lesbian couples had sex less often than straight couples or gay male couples. This result has been confirmed by other studies, giving rise to the persistent meme of "lesbian bed death," the idea that sex inevitably fades out to nothing for gay women in long-term relationships.