The current research presents an adapted Affect Misattribution Procedure (AMP) to assess the aspects of the relational schema of romantic partners that are difficult to verbalize and tests the prediction that a positive implicit image of the partner constitutes a psychological resource that increases well-being. In Study 1, the partner-AMP predicted well-being in student participants even after controlling for explicit partner attitudes and socially desirable responding. In Study 2, the partner-AMP was assessed in women with a recent history of physical abuse and a control group. As expected, the partner-AMP was related to group membership and predicted well-being over and above explicit partner attitudes and battering experience. The results are compatible with the notion of an implicit secure base schema.