We’ve all heard the saying, “Once a cheater, always a cheater.” But is it really true? Can someone who has cheated change, or are they likely to repeat the same behavior?

If your partner has cheated, you may be dealing with anger, confusion, hurt, or fear about what happens next. You may also wonder if it is possible to trust them again.

Dr. Christopher Joaquim, a couples therapist, has worked with couples dealing with infidelity and relationship challenges. His experience shows that cheating does not always mean a relationship has to end. However, rebuilding trust takes honesty, accountability, and consistent effort.

Let’s look at why people cheat, whether change is possible, and what couples can do after infidelity.

Why Do People Cheat?

Left unaddressed, this often traces back to how childhood trauma affects adult relationships, shaping the patterns that show up later in a marriage. Infidelity rarely happens without reason. It is not always about desire or a lack of love. More often, it reflects disconnection, emotional emptiness, or unmet needs.

Here are some of the most common reasons people cheat:

• Emotional neglect: When someone feels unseen or unappreciated, they may look for other sources for validation.
  
• Lack of communication: Instead of expressing what is missing, a person may seek comfort outside the relationship. This is often the first sign of what happens to a marriage when communication breaks down long before infidelity enters the picture.
  
• Opportunity and temptation: Sometimes cheating happens because of sheer impulse and weak personal boundaries..
  
• Low self-esteem: Cheating can be a way to feel desired or valued again.
  
• Unresolved personal issues:  Childhood trauma, insecurity, or fear of commitment can all contribute to infidelity. Left unaddressed, this often traces back to how childhood trauma affects adult relationships, shaping the patterns that show up later in a marriage.
  
• Revenge or resentment: In some cases, people cheat as a form of retaliation to regain a sense of control.
  

These factors may help explain why someone cheated, but they do not excuse the choice. The person who cheated is still responsible for their actions.

Dr. Christopher Joaquim emphasizes that cheating can involve personal choices as well as relationship problems. Understanding what happened can help couples decide what needs to change.

Can a Cheater Really Change?

This is the question that divides opinions. Some believe that once someone crosses that line, they will do it again. But the truth is more complex.

The real issue is not whether someone cheated, but why they did it, and what they are willing to do afterward.

According to Dr. Joaquim, change is absolutely possible, but only if the person who cheated:

• Takes full responsibility without blaming their partner or circumstances
  
• Shows genuine remorse rather than guilt only after being caught
  
• Understands their triggers and the reasons behind their behavior
  
• Commits to transparency and open communication
  
• Is willing to seek therapy and actively work to rebuild trust
  

Cheating can sometimes be connected to deeper personal or relationship problems. With therapy, self-awareness, and consistent effort, many people do change. The pattern can repeat without an honest level of commitment.

How to Rebuild Trust If You Choose to Stay In The Relationship

Rebuilding trust is one of the hardest parts of recovering from infidelity. It takes patience, empathy, and consistent effort from both partners. The same core principles apply whether you’re rebuilding trust after a single argument or a full breach — see our guide on how to rebuild trust after a fight for the fundamentals.

Here’s what that process often looks like:

1. Full Honesty

The person who cheated must be completely honest about what happened and answer questions openly, even if it is uncomfortable.

2. Transparency

Transparency may mean being more open about plans, communication, and other areas that have become difficult to trust. The goal is to rebuild safety, not create control.

3. Accountability

The partner who cheated needs to take active steps to regain trust. This could include attending therapy, reading relationship materials, or regularly checking in with their partner.

4. Consistency

Trust returns through small and consistent actions over time. Showing up, keeping promises, and following through matter more than the grand gestures.

5. Patience and Empathy

The betrayed partner will need time to heal. The one who cheated must be patient and show empathy instead of frustration or defensiveness.

6. Couples Therapy

Couples therapy can provide a safe and structured space where both partners can talk about what happened, understand the relationship challenges, and work on rebuilding trust. If you want a deeper walkthrough of the process itself, read what happens in couples therapy before your first session.

When It’s Time to Walk Away

Even with effort and therapy, not every relationship can or should be repaired. You may want to consider whether staying is healthy for you if:

• The person who cheated refuses to take responsibility
  
• They continue lying or hiding details
  
• They blame you for their actions
  
• There is ongoing emotional manipulation
  
• You feel unsafe or anxious in the relationship
  
• You have lost trust in yourself and your ability to believe them again
  

Forgiveness is important, but it does not always mean reconciliation. You can forgive someone for your own peace and still choose to move on.

Why Do Some People Cheat Again?

A past affair can increase concerns about whether someone may cheat again, especially when the person does not take responsibility or make meaningful changes.

The difference between a one-time incident and a repeated pattern often comes down to accountability, honesty, and whether the person is willing to make real changes.

People who change:

• Reflect deeply on their actions
  
• Take consistent steps toward growth
  
• Avoid situations that may lead to temptation
  

People who repeat the pattern:

• Minimize their actions
  
• Blame external factors like alcohol or stress
  
• Refuse to talk about what happened
  
• Avoid seeking professional help
  

If your partner is genuinely doing the work through therapy, self-reflection, and better communication, there is hope. But if the same behaviour continues and there is no real effort to change, you may need to reconsider whether staying is right for you.

How Couples Can Move Forward If Together or Apart

Every couple’s path after infidelity is unique. Healing is not about what others think you should do; it’s about what feels right for you.

If you stay:

• Create emotional safety and rebuild trust step by step
  
• Set clear and healthy boundaries
  
• Focus on rebuilding communication and intimacy
  
• Reconnect with shared goals and values
  

If you leave:

• Take time to heal before entering another relationship
  
• Reflect on what you learned about yourself
  
• Remember that your worth is not defined by someone else’s choices
  

Moving forward after infidelity is not about forgetting what happened, but about learning who you are and what kind of love you deserve. If you’re navigating this during a trial separation rather than a clean break, here’s what to expect from couples therapy during separation.

When to Seek Professional Help

Infidelity brings up powerful emotions such as anger, shame, guilt, and confusion. Trying to handle them alone can be overwhelming .

A trained therapist like Dr. Christopher Joaquim can help you:

• Understand the root cause of the affair
  
• Process your emotions in a healthy way
  
• Rebuild communication and trust
  
• Make clear, informed decisions about your relationship
  
• Learn tools to prevent emotional distance in the future
  

Therapy provides a safe space for reflection, healing, and hope, whether you decide to stay or part ways.

Why Couples Choose Dr. Christopher Joaquim

Dr. Christopher Joaquim has more than 21 years of experience working with individuals and couples facing relationship challenges, including communication problems, conflict, trust issues, and emotional distance.

His approach focuses on helping couples:

• Understand what is affecting their relationship
• Communicate more openly
• Rebuild trust after difficult experiences
• Handle conflict in healthier ways
• Make thoughtful decisions about their relationship

Dr. Joaquim provides a supportive space where both partners can talk openly and work toward meaningful changes.

If you are struggling with betrayal, trust, or uncertainty about your relationship, professional support can help you understand your options and decide what steps may be right for you.

So, Once a Cheater, Always a Cheater?

Not necessarily. Cheating does not have to define someone forever. A person can learn from what happened and make meaningful changes, but that requires honesty, accountability, and consistent effort.

What matters is what the person does after the infidelity. Do they take responsibility? Are they willing to understand why it happened? Are they making real changes to rebuild trust?

If both partners are willing to communicate openly and work on the relationship, it may be possible to rebuild trust and move forward. But if the cheating continues or there is no genuine effort to change, staying together may not be healthy for both partners.

Final Thoughts

Healing after infidelity takes time. Whether you decide to stay or move on, you deserve honesty, respect, and emotional safety.

If you and your partner want to rebuild the relationship, open communication, accountability, and consistent effort are important. If you are unsure what to do next, couples therapy can give you a safe space to understand your options.

Dr. Christopher Joaquim can help couples work through trust issues, communication problems, and the emotional impact of infidelity.

Progress isn’t always obvious in the moment — these signs your couples therapy is working can help you gauge whether it’s on track.”

Frequently Asked Questions