One factor that often attracts people romantically is their differences. When these differences are not too extreme, individuals may feel drawn to partners who complement them in ways that are opposite. For example, an introverted person may feel attracted to an extrovert, and someone who speaks little may be drawn to a more talkative partner. However, cultural differences can sometimes create challenges in romantic relationships.

People who grow up with different customs and learn to express love in specific ways within their family of origin may feel unloved or unimportant when their partner shows affection differently. As a result, they may pressure their partner to change to align with their own customs, and wonder why the partner resists. This resistance is often interpreted as a lack of love rather than a difference in emotional expression.