On Attachment30 Sep 2025

#208: Anxious Attachment & the Fear of Infidelity

Fear of infidelity can be one of the most overwhelming and destabilising experiences for someone with anxious attachment. Even when there’s no evidence a partner is being unfaithful, the possibility alone can trigger deep anxiety, hypervigilance, and constant worry.

In this episode, we explore why anxiously attached people often fear cheating so much, even in the absence of proof. We’ll look at the core wounds and nervous system patterns that fuel this fear, the role of past relationship and childhood experiences, and how certain dynamics—especially with avoidant partners—can make these fears even more intense.

We’ll also unpack the ways fear of cheating can show up in a relationship, the problems with trying to “prevent” it through control or monitoring, and practical steps to move towards a more secure, trusting dynamic.

If this is something you’ve struggled with, this conversation will help you understand what’s happening beneath the surface and give you tools to respond in a way that’s calmer, clearer, and more grounded.

You’ll learn:

The connection between anxious attachment and fear of infidelity
How past betrayal or early life experiences can amplify the fear
Why anxious-avoidant relationships can trigger cheating anxiety
How hypervigilance and reassurance-seeking can harm trust
Tools for building self-trust and relationship security

Highlighted Links

Additional Resources

Download the FREE Anxious Attachment Starter Kit here
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