Diffuse Boundaries: When Children Become Too Close to the Pain of Parental Infidelity

In some families, the emotional intensity of betrayal leads to a softening—or blurring—of boundaries between parent and child.

When parents are navigating the pain, grief, anger, confusion, or uncertainty that often follows infidelity, it can be difficult to separate their own emotional experience from their parenting role. While this is understandable, children can sometimes become drawn closer to the emotional impact of the betrayal than is helpful for their development or wellbeing.

This can look like:

• sharing emotional distress with a child

• leaning on them for comfort or reassurance

• increased closeness that begins to replace the adult relationship

• subtle or overt alignment with one parent

This can sometimes feel like a parent seeking to support a child through a time of significant family pain and disruption, but it is often driven by a parent who is trying to cope, regulate overwhelming emotion, or find connection when the couple's relationship no longer feels stable.

Professor Joshua Coleman's work reinforces that when children become a primary source of emotional support for a parent, the relationship can shift away from a secure parent–child dynamic into one that is overly dependent and emotionally entangled.

Clinically, this creates diffuse boundaries, where the child is drawn too closely into adult emotional space.

Over time, this can lead to enmeshment, where the child's role shifts from being supported to becoming part of the emotional system and feeling responsible for holding the family together.

In practice, what becomes important here is not withdrawing from the child but gently restoring the boundary—ensuring that while children of any age are not left in the dark, they are also not placed in a position where they are holding or managing their parent's adult emotional pain.