This paper is an investigation into the conditions under which anti-love biomedical intervention is justified. Our central claim is that anti-love biomedical intervention can be justified without the “simultaneous consent” of recipients (where the simultaneous consent of a person S is understood as S’s consent at time t to an intervention at t) when it contributes to increased autonomy. We begin with an overview of earlier discussions of the ethics of anti-love biomedical intervention, focusing on the pioneering work of Earp (...) and colleagues. We then present some cases in which paternalistic intervention may be effective. We will then present an argument for the idea of anti-love biomedical intervention without simultaneous consent, based on an analogy between (biomedical intervention in) addiction and (biomedical intervention in) love. One premise of this argument is that love and addiction are importantly similar in that they can compromise the autonomous capacity for self-governing. The other premise of this argument is that biomedical intervention in addiction without simultaneous consent can be justified if the intervention is expected to restore the compromised capacity for self-governing. We will propose the “Ulysses contract”, a contract to enforce anti-love biomedical intervention when the recipient refuses it, as a possible measure of such paternalistic intervention and discuss its possible risks. (shrink)