Some degree of caution after being cheated on is reasonable. The person has evidence that trust can be violated, and it makes sense to be more careful about who they trust going forward. The line between healthy caution and hypervigilance is crossed when the scanning for betrayal becomes constant, exhausting, and impossible to turn off regardless of the evidence. Hypervigilance is not a decision to be careful. It is a state of chronic alarm that the person cannot exit. It erodes the relationship from the inside because the partner on the receiving end eventually feels that no amount of transparency or reassurance will ever be enough.
Dr. David Steinbok helps patients from the Deerfield Beach, Florida area identify where they fall on this spectrum. A therapist for trust issues after being cheated on recognizes that the hypervigilance is not stubbornness or a refusal to move on. It is a trauma response. Addressing it requires working with the underlying injury rather than trying to convince the person that their current partner is trustworthy, because the problem is not about the current partner. It is about what the betrayal did to the person's internal sense of safety.
