According to the self-expansion model, people are motivated to acquire new resources and experiences, relationships are one good source for this process (Aron, Lewandowski, Mashek, & Aron, 2013) However, when the expansion period decelerates, relational boredom would occur (Aron & Aron, 1986) but little is known about the influence of relational boredom on close relationships. In this study, we intend to clarify the link between relational boredom and personal well-being. In addition, we will manipulate...