Unclear boundaries between a couple can lead to confusion and potential problems in a relationship. The Bible provides guidance on establishing clear boundaries in relationships. It encourages couples to prioritize open and honest communication, mutual respect, and fidelity. It teaches that couples should refrain from crossing the line of infidelity and to avoid actions that may hurt or betray their partner. The Bible also emphasizes the importance of setting and respecting personal boundaries in order to maintain individual growth and healthy dynamics within the relationship.