The current research tested a model with satisfaction with relationship status and fear of being single as mediators in serial of the linkage relationship status - well-being measured in terms of life satisfaction, emotional and psychological well-being, and depression. Results from a sample of 556 Polish participants aged 20 to 35 (M = 22.64, SD = 3.34) demonstrated that the link between relationship status and well-being was fully mediated by satisfaction with relationship status and fear of being single operating as separate mediators, as well as by satisfaction with relationship status and fear of being single as mediators in serial. In addition, the indirect effect of relationship status on well-being through satisfaction with relationship status was larger than the indirect effect of relationship status on well-being through satisfaction with relationship status and fear of being single operating in serial. (C) 2017 Elsevier Ltd. All rights reserved.