Infidelity disrupts personal commitment – which is why infidelity is so painful.

why infidelity is so painful

By Sarah P.

For any betrayed spouse, there is no doubt in their minds that infidelity hurts.

The number one question that betrayed spouses often ponder is this: how can the person who loved them so much hurt them so badly. But, further, why can’t the wayward spouse understand the pain of betrayal?

Many people seek closure because it is human nature. I have noticed that if one can explain a thought process to another, that individual can put the puzzle pieces together, and it can provide them with a sense of understanding.

If someone can have understanding, and know the WHY, they sometimes can emotionally distance themselves from what their spouse is doing and realize it’s not about them.

What’s worse is when a person believes he or she directly caused an affair, it is one of the single most devastating events of a person’s life and developing PTSD is not uncommon.

Trauma Series Part One: PTSD and Affairs

For some reason, wayward spouses cannot understand how their betrayal causes complex PTSD in their spouses. And, rightfully, betrayed spouses cannot understand how their spouses who promised to cherish them, to forsake all others, and to be faithful forever can completely abandon them.

Betrayed spouses experience infidelity as absolute and devastating abandonment. It is not uncommon for betrayed spouses to experience a complete loss of feeling safe in life. Sometimes a person’s entire mind, body, and soul is affected when their spouse commits adultery.

Betrayed spouses can sometimes become physically ill when their spouse commits adultery. Sometimes the experience of being betrayed takes over a person’s entire identity and the repercussions of betrayal can affect every aspect of their being.

Affair Causes

At some point, betrayed spouses can often become stuck on the why of infidelity – and rightfully so.

Are affairs caused by…

Attachment issues?

Childhood feelings of abandonment?



Mid-life crises?

Watching a parent or other role model commit adultery?




Why is Infidelity So Painful?

In the past, my blogs have done deep dives into the why’s of infidelity, but a recent research study caused me to realize that there is more to the story.

The topic that might give betrayed spouses a better understanding of comprehending their personal pain, has to do with the factors that make relationships successful.

Here is where research studies are tremendously helpful. The reason infidelity is so painful is because it renders null and void the very thing that couples need to feel safe and satisfied in a relationship: a sense of commitment.

“How Could You?” – The Psychology of Justifications, Rationalizations and Excuses for Infidelity

I found this in a Psychology Today article that sheds light on why infidelity is so painful, written by Rob Pascale and Lou Primavera Ph.D. These two psychologists found that relationship success comes down to a specific form of commitment; however, it is only one type of commitment that truly makes the largest impact:

“One of the fundamental cornerstones of a successful marriage is commitment, an unwavering allegiance to a relationship and a partner. Commitment in marriages comes in different forms. People can be committed out of moral reasons. These couples typically have religious beliefs or social norms that compel them to stay in their marriage. They can feel a sense of duty, be concerned about how a divorce would be judged by others, or feel obligated to follow the guidelines of their religion.

Another is practical or structural commitment, which results from an intermingling of resources. Married couples pool money and other material possessions, have children, and establish a social life together. In doing so, their lives can become entangled to such an extent that it can be easier to stay in a relationship than to leave it. For both moral and structural commitment, external factors to keep the marriage together, and partners believe they have no choice but to stay married, regardless of whether or not they’re happy. This type of commitment does not imply that partners are personally connected to each other.

A third is personal commitment, which differs from other two in that it has an emotional component. Personally committed partners see their relationship and their emotional bond as the most important thing in their lives, and stay married because they want to, not out of necessity or a sense of responsibility.

Personal commitment is the one that really matters. The emotional aspect of personal commitment enhances our marriage because it directs how we feel about our partner, and how we feel about them regulates how we treat them. Personally committed partners tend to think of each other in a positive light — how can we be emotionally committed to another person if we don’t think favorably of them? As a result, they tend to work hard to keep their relationship on solid ground. In conflicts, they try to diffuse the situation and not let it get out of control.

They also tend to sacrifice their personal needs and focus more on pursuing ones that serve the couple. They think of themselves not as individuals but as a team, sharing aspirations, thoughts and interests, all of which strengthen their desire to stay together.

While moral and structural commitment may keep a marriage intact, they do not affect how partners feel about each other. Morally and structurally committed partners are dedicated to their marriage, but not necessarily to each other. So we might not work as hard as we could to make our partners happy and to make the marriage a happy one. Furthermore, because we’re committed to the idea and not the person, we might not feel the need to express much interest or affection for our spouse. The truth is, as hard as they might try not to, couples who are only morally or structurally committed are at greater risk of divorce than those who are personally committed, because they won’t put the effort in to make sure their relationship stays healthy.” (1)

How Infidelity Affects the Eight Areas that Lead to Successful Relationships

In Summary

While the why of infidelity matters, in the end a successful marriage comes down to two partners being equally committed to one another.

Infidelity hurts so much because infidelity disrupts the most important form of commitment: the knowledge, knowing, living, and understanding that each person in a couple is a team and has the back of the other.

In the end, it’s not structural commitment or moral commitment that keeps a marriage in tact. The most important part of a marriage is two people being genuinely and personally committed to one another.

Infidelity disrupts personal commitment. It is the disruption of personal commitment, that causes the stinging and unforgettable pain, which betrayed spouses suffer.

If you are the betrayed spouse, I invite you to share this article with your wayward spouse. I hope they (you) can understand the different types of commitment and how they (you) disrupted the one type of commitment that matters most – personal commitment – when they (you) had an affair.

Please share your thoughts on why infidelity is so painful in the comment section below. 


    4 replies to "Infidelity Disrupts the Number One Component of Happy Marriages and Why this Disruption Causes Pain"

    • Phoenix2020

      Thank you, Sarah. This may be the most coherent explanation I’ve read as to why it hurts so much. NOTHING in my 62 years has ever hurt more deeply. We’re a year out from discovery and are struggling to heal, but the ongoing pursuit by the OW is making it so much harder to keep the past from intruding into the present. My WS reads this blog, and l hope this helps him grasp what I have struggled to express.

      • Sarah P.

        Hello Phoenix 2020,
        I hope your husband is receptive to this article and I wish you many blessings.

        I am sorry that the other woman is still in pursuit. Perhaps your husband would be receptive to closing ALL social media accounts and changing his phone number. However,in the end, your husband must say NO to the other woman and he must be completely done with her and he must be committed (within himself) NOT to return to her.

        I hope you find the solace you need and hope you find the safe anchor that you need through this difficult time. ❤️

        I hope that your husband reads this article and takes to heart what it means to be committed.


    • RegretEverGivingHerAchance

      So what happens after Infidelity if the cheating spouse says they love you, willing to do wateva it takes etc etc etc. But has actually shown via their actions that they’re not sorry and that they’re not willing to put in much effort at all(other than telling me that, “they’re here. That they could just be with their affair partner if they wanted.” So what should we do then? This has gone on for over a year and I’ve told her that I can’t and won’t accept this. I’ve told her what I’ve wanted from her in regards to complete honesty and full disclosure etc but her actions have shown a complete lack of care or love towards me. I’ve told her that I’ve reached a point where I can only see divorce as the only solution. And her reply was that I was the one forsaking our wedding vows!
      I’m so tired of this. So tired.
      Her words mean nothing to me now. Just something she says but doesn’t mean. I’m turning 40 tmrw and being stuck at home due to covid is just so……lonely? Disappointing and frustrating.
      I’m so over this. I feel no pain now. Just a deep seated resentment. Why did I put myself through all this? Why didn’t I just walk away? What the hell happened to me?

      • Sarah P

        Hello Regret,
        I am so sorry to hear about your account. Your account echoes those of many betrayed spouses, but the commonality in the dynamic doesn’t make a dent in the visceral pain you feel.

        What happened to you? You might feel a temporary loss of sense of self due to your spouse’s actions. Everything feels upside down and disorienting.

        Watch your wife’s actions and not words and see if you can live with her actions. If you cannot, you are still a young man and have many opportunities to find peace and to find someone who appreciates you.

        I tell betrayed spouses not to take it personally, but I have to admit even I take it personally. But, the truth of the matter is, people have affairs due to how they view life and people have affairs due to internal deficits.

        You are welcome here and hopefully this blog can provide a safe space for you. I am truly sorry about this shocking disappointment.


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