Discussing good news builds strength in relationships. In particular, perceiving a close other as enthusiastic about good fortune can help individuals maintain relational strength when relationship security is threatened. In an experiment and a daily diary study, how self-esteem moderates perceptions of a partner's response to these capitalization attempts following relationship threats were examined. After having been primed with relationship threat (Study 1) or on days following relationship conflict (Study 2), low-self-esteem persons perceived less partner enthusiasm about their good news, but high-self-esteem persons perceived more partner enthusiasm. Self-esteem had no effect after a neutral prime or no-conflict days. These results indicate that capitalization as a strategy for repairing relationships may depend on the partners' self-esteem.