Which theory or model of the development of relationships suggests that we balance the rewards and costs of maintaining versus ending a relationship?

Question

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Social exchange theory suggests that individuals evaluate relationships based on the rewards (such as pleasure, companionship, and support) versus the costs (such as time, effort, and emotional investment) of maintaining versus ending the relationship. This theory proposes that people seek to maximize rewards and minimize costs in their relationships.

Which Theory or Model of the Development of Relationships Suggests