People can come into a relationship with preconcieved notions of the other person based on steryotypes. A white man might get annoyed when his Japanese girlfrie

People can come into a relationship with preconcieved notions of the other person based on steryotypes. A white man might get annoyed when his Japanese girlfriend stands up for herself ("After all aren't they all supposed to be meek and docile, what's the point of dating a japanese girl if they aren't the same"), a white woman might get annoyed when her latino boyfriend won't get aggressive when another man hits on her ("Aren't Latinos supposed to be fiery, passionate and stand up for their woman (me)? What's wrong with this guy that he won't start a fight over me?"), someone might feel cheated or let down when their black male partner does not have a massive penis ("they are all supposed to be big!"). These preconceived notions can interfere with relationships and put pressure on people to act in certain ways, which might not be in keeping with who they actually are.