["Journal of Applied Philosophy, EarlyView. ", "\nABSTRACT\nDiscussions about infidelity in the philosophy of love typically emphasize sexual transgressions, often neglecting emotional infidelity. In this article, I provide a conceptual analysis of emotional affairs. In my view, emotional affairs are defined as extrarelational connections that (a) take on a pattern of intimacy that mirrors the intimacy present in a relationship whose emotional structure is presumed to be exclusive, (b) involve a sustained consideration of being engaged in a relationship that mimics the original with the affair partner, and (c) involve a form of deception, asymmetry, or relational opacity – whether by omission, strategic withholding, etc. – that disrupts mutual transparency between relata. While the primary aim of this article is to establish a conceptual account of what emotional affairs are, I recognize that it is worth considering (and gesture at some preliminary considerations) that emotional affairs might not always be morally problematic. That is, identifying whether and how emotional affairs are wrongful is not always clear. Thus, I close by briefly sketching some preliminary reflections on their potential wrongfulness by pointing out a few morally salient features that might warrant further analysis in future work.\n"]