For years, our culture has repeated the same message about infidelity:
“Affairs happen because something was wrong in the marriage.”
Certainly marital problems can create vulnerability.
But after spending more than two decades researching affairs, rebuilding our own marriage after infidelity, and helping hundreds of couples heal, we have learned something important:
Sometimes affairs happen in good marriages too.
That reality is painful and deeply confusing for many betrayed spouses.
Especially for those who genuinely loved their spouse, prioritized their marriage, remained faithful, and believed their relationship was strong.
I was one of those spouses.
When Brian had an affair, I was completely shocked.
At the time, I believed the same myth many people believe:
if a marriage is loving enough, emotionally connected enough, and sexually fulfilling enough, an affair simply would not happen.
I was wrong.
Can Someone Cheat Even in a Happy Marriage?
Yes. Affairs can happen even in loving marriages because infidelity is often influenced not only by marital problems, but also by personal vulnerabilities, emotional immaturity, environmental factors, attraction dynamics, poor boundaries, and lack of self-awareness.
This does NOT mean marriage problems are irrelevant.
Sometimes marital struggles absolutely contribute to vulnerability.
But reducing all affairs to:
“the marriage must have been bad”
is far too simplistic.
Many betrayed spouses torture themselves trying to identify what they supposedly failed to provide.
In reality, the roots of infidelity are often much more complicated.
Why Betrayed Spouses Often Blame Themselves
When an affair is discovered, many betrayed spouses immediately begin searching for explanations.
Questions flood their minds:
- Was I not attractive enough?
- Did I fail emotionally?
- Was our sex life insufficient?
- Did I neglect my spouse somehow?
The mind desperately wants certainty.
Because if betrayal happened due to some clear failure, then perhaps future pain can somehow be prevented.
But this search for certainty often creates crushing self-blame.
One of the most important things betrayed spouses need to understand is this:
You can be a loving, attentive, faithful spouse and still experience betrayal.
That does not mean you were perfect.
No marriage is perfect.
But infidelity is never fully explained by marital imperfections alone.
Understanding the “Push” and “Pull” of Affairs
Relationship researcher Peggy Vaughan described affairs as involving both:
pushes
and
pulls.
This framework remains one of the most balanced explanations of infidelity we have encountered.
Some “pushes” may include:
- marital stress,
- emotional disconnection,
- conflict,
- depression,
- insecurity,
- loneliness,
- exhaustion,
- or life pressures.
But there are also powerful “pulls” toward affairs that many people underestimate.
This is the elephant in the room our culture often ignores.
The Power of New Attraction and Infatuation
When someone new begins paying special attention to you, it can feel intoxicating.
Even people in good marriages are vulnerable to:
- novelty,
- excitement,
- admiration,
- validation,
- emotional chemistry,
- and the thrill of feeling desired again.
Anthropologist Helen Fisher has extensively described the very different brain chemistry involved in:
new romantic attraction
versus
long-term committed love.
They are not the same experience.
The emotional intensity of “falling in love” creates a biochemical cocktail that can temporarily distort judgment, especially when someone lacks self-awareness and healthy boundaries.
This does not excuse infidelity.
But it helps explain why affairs sometimes develop so rapidly and irrationally.
Why Affairs Sometimes Surprise Good People
One of the biggest factors contributing to Brian’s affair was actually:
his belief that he could never have one.
Because we believed affairs only happened in unhappy marriages, we assumed we were safe.
We genuinely loved each other.
We enjoyed being together.
Our marriage was strong compared to many around us.
Brian did not have his guard up because he believed:
“This could never happen to me.”
Ironically, that false sense of safety became part of the danger.
When he met the other woman, the fact that he did not initially find her physically attractive made him assume the relationship was harmless.
What he failed to recognize was how emotional connection gradually develops and how dangerous emotional intimacy outside marriage can become over time.
Affairs often begin not with sexual attraction, but with:
- emotional familiarity,
- emotional safety,
- admiration,
- shared vulnerability,
- and increasing emotional dependency.
Brian’s Personal Vulnerabilities During the Affair
At the time of Brian’s affair, he was struggling with several significant personal vulnerabilities.
His father had recently passed away.
He was experiencing painful disrespect issues with our teenagers.
He had also started a demanding new job.
Looking back now, the biggest factor was not simply these stresses themselves.
It was Brian’s lack of self-awareness regarding how deeply those experiences were affecting him emotionally.
Many people entering affairs are not consciously thinking:
“I want to destroy my marriage.”
Often they are emotionally vulnerable, exhausted, disconnected from themselves, and unaware of how susceptible they have become to outside emotional attachment.
Why Knowledge and Boundaries Matter
One of the most dangerous myths about infidelity is:
“Good people are not vulnerable to affairs.”
The truth is:
all human beings are vulnerable under certain circumstances.
This is why:
- self-awareness,
- emotional honesty,
- healthy boundaries,
- and understanding how affairs actually develop
are so important.
Many emotional affairs begin innocently.
Coworkers talk.
Friendships deepen.
Emotional support grows.
Private conversations increase.
Boundaries slowly weaken.
What feels harmless initially can quietly become emotionally intimate over time.
Awareness matters enormously.
Healing Without Self-Blame
During our healing journey, both Brian and I identified areas where we could strengthen our marriage and communicate more effectively.
We both grew emotionally.
But Brian repeatedly told me something important:
“Even if you had been the perfect wife, I still would have had an affair because the affair was about my vulnerabilities, not your failures.”
That truth mattered deeply to my healing.
For a long time, I desperately searched for some guaranteed formula that would ensure Brian would never hurt me again.
Eventually I realized:
my security could never come from controlling another person.
My confidence now comes from:
- greater wisdom,
- stronger boundaries,
- emotional growth,
- healthier communication,
- and the understanding that I will be okay regardless of another person’s choices.
That realization changed my life.
What Truly Creates Safety After an Affair?
Real safety in marriage does not come from perfection.
It comes from:
- honesty,
- humility,
- self-awareness,
- emotional maturity,
- healthy boundaries,
- openness,
- and consistent trustworthy behavior.
It also comes from understanding that affairs are usually far more complex than:
“my spouse stopped loving me.”
Most people who have affairs are not evil monsters.
They are flawed human beings who became vulnerable, emotionally unaware, poorly boundaried, and dangerously disconnected from wisdom.
That understanding does not remove accountability.
But it does create a more compassionate, realistic, and ultimately more healing understanding of infidelity.
Why This Message Still Matters
Many betrayed spouses continue suffering unnecessary shame because they assume:
“If my spouse cheated, our marriage must have been fake.”
That is not always true.
Good marriages can still experience vulnerability.
Good people can still make devastating choices.
And couples who understand the deeper dynamics behind infidelity are often far better equipped to:
- protect their marriages,
- rebuild trust,
- heal emotionally,
- and grow into stronger relationships afterward.
By Anne and Brian Bercht