I can offer some general possibilities for why someone might behave in such a way:
Guilt and Confession: The husband might have felt immense guilt and a sense of responsibility for his actions, leading him to confess his infidelity to his wife as a way of unburdening himself.
Desire for Honesty: Some individuals believe in being honest with their partners, even if it means revealing painful truths. The husband may have thought that openness and honesty are crucial for the health of their relationship, regardless of the consequences.
Attempt at Reconciliation: By confessing his infidelity, the husband might have hoped to mend the relationship by starting fresh with complete honesty. He could be seeking forgiveness and a chance to rebuild trust.
Mixed Emotions and Confusion: The husband may have conflicting feelings for both his wife and the mistress, leading to indecisive actions. He might be struggling with making a clear-cut choice between the two.
Escapism and Temptation: Going back to see his mistress after confessing might suggest that he finds some form of emotional or physical comfort in that relationship, making it difficult for him to completely end it.
Lack of Impulse Control: Some individuals struggle with impulse control and may act on emotions and desires without fully considering the consequences.
Avoidance of Consequences: The husband may have confessed to ease his conscience without truly intending to end the affair or face the repercussions of his actions.
Emotional Complexity: Human emotions and relationships are intricate and often hard to understand. The husband's behavior could be a result of complex emotions, unresolved issues, or past traumas.
Pattern of Deception: Unfortunately, some people engage in patterns of deception and may not fully comprehend the impact of their actions on others.
It is essential to remember that every individual and relationship is unique, and trying to understand specific actions without knowing the full context can be challenging. If you or someone you know is facing such a situation, seeking professional advice from a therapist or counselor can be beneficial in navigating the complexities and finding the best path forward.