The present research examined the hypothesis that positive implicit attitudes toward a former romantic partner might be detrimental to well‐being as these attitudes lead to more suffering. In a cross‐sectional study (N = 144), implicit ex‐partner attitudes measured with an Affect Misattribution Procedure were negatively related to well‐being only for those participants who had not found a new partner after breakup. In contrast, positive explicit ex‐partner attitudes were related to greater well‐being, again only for those who were still alone. Contrary to the view that time will heal all wounds, the current research suggests that engaging with a new partner will make both implicit and explicit ex‐partner attitudes irrelevant.