Consider the relationship between Dante and Virgil.
Both Virgil and Dante have a relationship in hell because of Dante exploration of the nature of sin. Dante explores through hell and Virgil is his support. Virgil is guidance for Dante in a way as he shows Dante the results of actions that can cause if his interests change. As Dante deals with conflicts as he loses his path. Virgil protects Dante even though he gets impatient with him. They share a strong relationship due to Virgil symbolizing guidance and Dante a representation of the human race.