I Had the Affair. Now I Want to Understand Why.

Sep 2

When we talk about infidelity, most of the conversation understandably focuses on the person who was betrayed. But what if you were the person who had the affair, you regret what happened, and you are now trying to understand how you got there? You may already know that what you did was hurtful. You may have apologized, ended the affair, started repairing your relationship, or decided that the relationship cannot be repaired. Still, there can be a question that is much harder to answer: Why did I do it?

“I was unhappy” might be part of the answer, but it usually isn't enough to understand the whole pattern. People can experience unhappiness, loneliness, attraction to someone else, sexual frustration, resentment, boredom, or disconnection without having an affair. Understanding your behavior means getting curious about what was happening internally, what boundaries changed along the way, what you were getting from the experience, and what you allowed yourself not to think about while it was happening.

Research on infidelity also suggests that there isn't one universal “type” of person who cheats or one explanation for why it happens. Relationship dissatisfaction can matter, but so can attachment patterns, validation, anger, sexual desire, opportunity, commitment, self-esteem, and the desire to experience something different or new. Understanding those factors does not remove responsibility. It can actually make accountability more meaningful. If the only conclusion is, “I made a terrible mistake and I'll never do it again,” you may still know very little about the version of yourself who was capable of making that decision. The goal of these questions is to understand that person better.

Journal Prompts

When something still feels unfinished, journaling can give you a place to explore what you're actually searching for beneath the need for closure. You don't have to work through every prompt. Notice which ones create a reaction in you. Sometimes the question you most want to skip is worth getting curious about.

Go back before the affair. What was happening in your life and within you during the months leading up to it?
Think beyond your relationship. Consider your confidence, identity, stress, loneliness, sexuality, work, friendships, aging, major transitions, or how you generally felt about yourself.
What did you feel when this person showed interest in you, and what did their attention seem to give you?
Did you feel attractive, wanted, interesting, important, exciting, understood, powerful, carefree, or like a different version of yourself? What might that tell you about something you were craving at the time?
Before the affair became obvious, what smaller boundaries had already started changing?
Think about conversations you hid, messages you looked forward to, things you stopped telling your partner, situations you intentionally put yourself in, or moments when you knew something was shifting. At what point did you first recognize that you were crossing a boundary?
What did you tell yourself that made those smaller choices feel acceptable at the time?
Maybe you minimized what was happening, focused on problems in your relationship, told yourself you deserved something, assumed nobody would find out, or avoided thinking about the consequences altogether. What did you need to believe in order to keep going?
What needs were you expecting someone else to recognize or meet that you had difficulty identifying, communicating, or taking responsibility for yourself?
This isn't about blaming your partner for not meeting your needs. Instead, consider whether you had learned how to communicate loneliness, sexual needs, resentment, insecurity, boredom, disconnection, or a desire for more independence before acting on those feelings.
If the affair gave you permission to become a different version of yourself, who were you when you were with that person?
What was different about you? Were you more spontaneous, sexual, confident, adventurous, relaxed, desired, or emotionally open? Which of those qualities actually belonged to the other person, and which might be parts of yourself that you had lost touch with?
What uncomfortable conversation, decision, feeling, or reality did the affair allow you to temporarily avoid?
Consider whether there was something you didn't want to confront about your relationship, yourself, getting older, your sexuality, your future, your unhappiness, or a decision you knew you needed to make.
When you look at your relationship history, do you recognize any patterns around closeness, vulnerability, validation, conflict, or pulling away?
You don't need to force an attachment-style label onto yourself. Simply notice what tends to happen when relationships become very close, predictable, difficult, emotionally vulnerable, or conflictual.
What part of your explanation belongs to the relationship, and what part belongs entirely to you?
Your relationship may have had very real problems. You can acknowledge those without making them responsible for your decision. Write honestly about both sides.
If you genuinely want to prevent this pattern from happening again, what needs to change beyond simply promising yourself that you won't cheat?
Think about boundaries, communication, honesty, alcohol or other situational factors if relevant, how you respond to attraction, your need for external validation, the way you handle resentment, and your willingness to address relationship problems before they become crises.

Understanding why something happened does not mean deciding that it was okay. Sometimes understanding is what allows us to take fuller responsibility because we stop seeing our behavior as something that mysteriously “just happened” and begin recognizing the choices, emotions, vulnerabilities, and patterns that led us there.

You cannot change the choices you already made. You can become much more aware of what was happening inside of you when you made them.

Disclaimer: These prompts are designed to support personal reflection and deeper self-exploration, and are intended for individuals who are actively engaged in therapy with a licensed counselor or social worker. Some prompts may surface strong emotions or trauma-related memories. If you notice distressing symptoms or feel unsafe, seek professional support. If you experience thoughts of self-harm, harm to others, or feel in crisis, call 911 or the Suicide and Crisis Lifeline at 988 for immediate help.