In her important book When Species Meet (2008), feminist science studies scholar Donna Haraway calls love a “nasty developmental infection.” Illustrative of Haraway’s irreductive naturecultural provocations, she is referring here to the ways in which our relations with others, be they defined by what we call love, hate, excesses, or debts, make up who we are in our very constitution. Our becoming is not just affected by others, but infected by them. Like any successful parasite, an infection may operate behind the scenes unsensed or unrecognized until it gains significance in future experiences. The infection may be fought like the common cold, embraced like childhood chickenpox, or utterly necessary to our well-being like intestinal flora. Love and other relations can be understood as infections of our being that take us up, take us on, and change us.