Abstract
We build on the emerging adulthood and marital reconciliation literatures to examine two forms of relationship instability: reconciliations and sex with an ex. Analyzing recent data on young adult daters and cohabitors (n = 792), we find that nearly half report a reconciliation (breakup followed by reunion) and over half of those who break up continue a sexual relationship (sex with an ex). In this young adult sample, cohabitors experience greater relationship churning than daters. We describe individual demographic, social psychological, and relationship factors associated with reconciliations and sex with an ex. These findings showcase that young adult relationships are characterized by considerable volatility and add to our theoretical and empirical understanding of stability in intimate relationships in emerging adulthood.