Purser and Matarazzo are portraying lesbian couple Del and Phyllis. The duo founded San Francisco's Daughters of Bilitis in 1955 — making it the first social and political organisation for lesbians in the US — and published The Ladder, the first nationally distributed lesbian publication in the US. In 2004, they became the first gay couple to wed in the Bay Area. Although their union was later voided by the courts, they tied the knot again in 2008 when the Supreme Court legalized same-sex marriage.