This article describes the development and evaluation of the Gay and Lesbian Relationship Satisfaction Scale (GLRSS) as a measure of individuals' gay and lesbian same‐gender relationship satisfaction and social support. Clinicians and researchers administer relationship satisfaction scales to persons in gay and lesbian relationships with a heteronormative assumption that scales developed and validated with opposite‐gender couples measure identical relationship issues. Gay and Lesbian couples have unique concerns that influence relationship satisfaction, most notably social support. Using online recruitment and data collection, the GLRSS was evaluated with data from 275 gay and lesbian individuals in a same‐gender relationship.