Discovering that a parent has betrayed a long-term relationship can completely change the way a family sees them.
It becomes even more difficult when the person involved was someone everyone trusted, admired, and never expected to make such a devastating choice.
That is the situation this Reddit user found himself facing after learning about his father’s actions at an age when he thought his parents’ marriage was secure.
His father had always been seen as a kind and enjoyable person, making the revelation even harder to process.
Now, after decades together, the family is dealing with the consequences of one decision that changed everything. Scroll down to read how he is trying to make sense of it all.
Child discovers his father’s decades-long marriage is ending after a shocking betrayal

































One of the hardest realities of adulthood is discovering that people we admire are capable of making choices that fundamentally change how we see them.
Parents often feel like permanent fixtures in our lives, so when one of them betrays the family, the loss is not only of a marriage but also of the image we carried of that person for decades.
This story reflects more than the end of a long relationship. The poster is grieving two different losses at once.
The first is watching a mother endure the pain of infidelity after years of supporting the marriage, both emotionally and financially.
The second is reconciling the father everyone knew, a warm, outgoing man who was loved by friends and family, with the man whose repeated choices led to the collapse of that life.
Those two realities can exist together.
Someone may have many admirable qualities while still making deeply harmful decisions.
That contradiction often leaves adult children feeling confused, angry, and uncertain about what kind of relationship they should have with the parent moving forward.
A perspective that is sometimes overlooked is that infidelity affects an entire family system, not just the couple involved.
Adult children often feel pressured to choose sides or decide whether forgiveness should happen quickly.
In reality, they are not responsible for repairing the marriage or determining how either parent should move forward.
Their role is allowed to be much simpler: supporting each parent individually while deciding, at their own pace, what kind of relationship feels emotionally healthy.
The poster’s decision to wait until the divorce process was complete before speaking with his father demonstrates an effort to create emotional space rather than reacting purely from anger.
Seen through that lens, the father’s cooperation with the divorce, his acceptance of the consequences, and the support he is receiving from relatives and friends may help reduce conflict, but they do not erase the pain his decisions caused.
At the same time, the mother’s ability to move forward financially and emotionally, along with the family’s gradual stabilization, suggests that healing has already begun even if forgiveness remains uncertain.
The lasting lesson is that one serious mistake can permanently change relationships, but it does not have to define every relationship forever.
Trust, once broken, cannot be demanded back simply because time has passed.
It is rebuilt, if at all, through accountability, consistency, and respect for the people who were hurt.
For adult children especially, it is acceptable to love a parent while also recognizing that their actions have changed the relationship in ways that deserve time, honesty, and healthy boundaries.
Here’s what people had to say to OP:
These commenters warned that a sudden personality change could signal dementia, Alzheimer’s, or a brain tumor















This group corrected the assumption that the mother would “take everything,” noting she might instead owe him money










These Redditors felt the repeated income comparisons may have made the father feel belittled or inadequate
















This group suggested he may be experiencing a midlife crisis or trying to escape an unhappy relationship











One revelation shattered a marriage, changed several relationships, and forced the poster to see a beloved father in a painful new light.
Many readers sympathized with the confusion of loving someone while condemning what they did, especially when betrayal affects an entire family.
Others felt distance was necessary until trust could be rebuilt through accountability. What do you think?
Can a child maintain a relationship with a parent after discovering an affair, or does some damage permanently change that bond? Share your thoughts below.
















