Interpersonal Needs Shultz identified three interpersonal needs that will determine how long an interpersonal relationship will last. The more we want to be part of other people's lives, the more likely we are to maintain a relationship. If one person needs to make decisions more than the other person does, the relationship is more likely to continue than if both want to dominate or both refuse to decide. If both people have similar needs for affection and its expression, their relationship is more likely to continue. Intimacy is emotional connection.
Passion is physical attraction.
Commitment is decision to continue the relationship. Patterns and Expectations in a Relationship Relationships are of three kinds depending on their pattern of interaction. One person dominates. Two partners are equal in making decisions. Partners alternate in making decisions.