Close relationships require sacrifice. In fact, many people include sacrificing in the very definition of what it means to truly love another person—and indeed, research has shown that couples are happier and more likely to remain in their relationships if the partners are willing to sacrifice for each other. Sometimes that sacrifice can be life-changing, such as deciding to move to a different state in order to be with your partner; other times it might be something small and seemingly mundane, such as seeing an action movie instead of the comedy you would have chosen.