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.

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 often comes from a parent trying to cope, regulate overwhelming emotion, or find connection when the couple 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 the responsibility of 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.