“The fact is there will always be significant differences between you and your partner in some or all the areas mentioned here and also in many others. That’s why relationships aren’t easy. They require communication, negotiation, compromise, and a lot of acceptance of differences; they also require you to stand up for yourself, to be honest about your desires and your feelings, and—in some situations, where something vitally important to your health and well-being is at stake—to absolutely refuse to compromise.”