The sense of relational entitlement is the perception one has of what one deserves from one's partner, and it may play a crucial role in determining the quality of a couple's relationship. However, the concept was only recently subjected to empirical examination. The main goals of the current study were to continue the work initiated by the scale developers (Tolmacz & Mikulincer, 2011) by (1) further validating the Sense of Relational Entitlement Scale (SRE) in a sample of adult couples; and (2) examining the contribution of each partner's sense of relational entitlement to his or her own and his or her partner's relationship satisfaction. A sample of 120 Israeli, heterosexual, older couples (age = 58 years) in long-term relationships completed the study measurements. Factor analyses revealed that the SRE scale consisted of two major dimensions: conflicted entitlement and assertive entitlement. Applying an Actor-Partner-Interdependence Model (APIM) analysis indicated that the more conflicted one felt with regard to what one was entitled to, the less satisfaction one felt with the relationship. Additionally, the higher one's entitlement expectations were of one's partner (a subfactor of the assertive entitlement dimension), the more one's partner was satisfied with the relationship. The sense of entitlement construct seems to be relevant to the context of dyadic relationships and, as such, is worthy of further attention and investigation.