Grounded in the literature on computer mediated communication and in traditional theories of interpersonal relationships and communication (e.g., Uncertainty Reduction Theory) this study examined the predictors of communication satisfaction and relationship satisfaction in online romantic relationships. Additionally, desire for future interaction and romantic beliefs were examined. One hundred fourteen (N = 114) participants completed an online survey that measured communication satisfaction, relationship satisfaction, intimacy, trust, perceived similarity, physical attraction, attributional confidence (certainty), information seeking, romantic beliefs, and desire for future interaction. Results of multiple regression equations and bivariate correlations reveal that (1) communication satisfaction in online romantic relationships is most significantly predicted by intimacy, trust, and physical attraction, (2) relationship satisfaction in online romantic relationships is most significantly predicted by intimacy and communication satisfaction, (3) romantic beliefs is not significantly related to either communication satisfaction or relationship satisfaction, and (4) desire for future interaction is slightly related to both communication satisfaction and relationship satisfaction. Results of additional analyses are presented, and findings are discussed in terms of existing interpersonal theory and the future investigation of online relationships.