Despite the consistent, high use of Facebook among adolescents, few studies have examined how adolescents use Facebook when forming and maintaining romantic relationships. Based on the Internet-enhanced self-disclosure hypothesis, romantic relationship-oriented Facebook behaviors are likely to relate to adolescent self-esteem. The goal of this study is to examine romantic relationship-oriented Facebook behaviors (private exchanges, monitoring, public displays, and oversharing information) between adolescents and their romantic partners or crushes, and then test how these behaviors relate to self-esteem. Data come from an online survey of adolescents from the Midwestern United States who are current Facebook users. Results demonstrated that the most common romantic relationship-oriented Facebook behavior was monitoring. Regression analyses revealed that monitoring predicted lower adolescent self-esteem. Relationship satisfaction moderated the association between self-esteem and both private exchanges and oversharing information. Implications for adolescent romantic relationship development are discussed.