"It would be unwise to agree to nonmonogamy for the following reasons or with these hidden motives: * You're so in love with the person that while your gut is telling you no, you decide to say yes and will deal with it later. * You believe your partner likes the idea as an abstract concept, but it won't actually happen. * You agree to it, but secretly know you'll be "enough" for your partner and she won't ever want anyone else. * Although your partner has said he is nonmonogamous by nature, you know you can change him. * You think it's just a phase and she'll get over it."