Until You Do THIS A Fearful Avoidant Ex Can’t Trust You Ever

In my article a fearful avoidant ex saying “We tried and it didn’t work”, I briefly explained that fearful avoidants have a powerful internal alert system – I call a BS Detector – that retrospectively scans for signs that the old dynamic could repeat.

Every time trust is broken — a careless word, an insensitive comment, a broken promise, emotional inconsistency, dismissing their feelings, minimising their concerns, pulling away without explanation, or outright betrayal — their attachment system takes note.

Those past slip-ups or breaches in trust shape how they respond in the future, often long after the immediate situation is over. How you handle conversations from their stored memories can be the difference between escalation and progress quickly unravelling — and the connection stabilizing and reconnection very likely.

They’ll keep bringing up past memories until they can trust you again

[Excerpt from “The Fearful Avoidant BS Detector” Workbook 6]

They replay the incident repeatedly, asking themselves: “Was I too trusting? Did I miss a warning sign? Can I rely on them next time?”

Their BS Detector holds onto these moments to protect them from being blindsided again.

To make they don’t make the same mistake twice, a fearful avoidant will:

• Test your intentions in future interactions.
• Pull back emotionally, even after you’ve apologized or made amends.
• Watch for subtle signals that the same pattern might repeat.

This can feel like they’re holding a grudge, but to a fearful avoidant, the cost of being wrong about someone’s trustworthiness is high, so their attachment system errs on the side of caution.

If you’ve expressed doubt, questioned their motives and they felt accused, second-guessed, misunderstood, or if you shut them in moments when they felt you should have trusted their capacity to understand and empathize, fearful avoidants replay those moments over and over in their minds.

Feeling “shut out” can be particularly triggering for a fearful avoidant because it feels like exclusion, being ignored, or emotional rejection or abandonment.

Attachment system interprets it as you hiding things or being dishonest

Not only in the past, but will be in the future too. You find that even when things are going well, they’re constantly reassessing your trustworthiness.

Sometimes, you think you moved past what happened in the past – and one day often out nowhere or when their BS Detector picks up on something else, they bring it back up. They may even use a past trust slip-up or breach as a reason for not getting back together.

In a fearful avoidant’s mind, the past isn’t neatly separated from the present – it’s evidence that the same thing can happen again. It’s something that their BS Detector replays to warn them: “Don’t forget what happened last time. Don’t let yourself get blindsided again.”

This doesn’t mean they want to punish you or are holding a grudge, but rather that their attachment system is wired to use past pain as protection. To them, revisiting these moments is a way of testing whether they can truly trust again, or if history will simply repeat itself.

Why this makes getting back together harder

When a fearful avoidant brings up the past, it can feel frustrating, like you’re stuck paying for mistakes you’ve already tried to repair. But for them, bringing up the past is less about making things harder for both of you and more about making sure they’re protecting themselves.

Sometimes, it’s a fearful avoidant ex’s way of slowing things down, testing your consistency, and watching closely to see if your actions now truly match your words.

Without understanding this, it’s easy to react defensively:

• “We already talked about this.”
• “You need to move on.”
• “Why can’t you let it go?”

But these defensive reactions only reinforce their fears, because it feels like avoidance, minimizing or dismissal – and this is exactly the kind of response their BS Detector is built to zero on.

Unfortunately, there is nothing you can say or do to convince a fearful avoidant that the same thing can’t happen again because this is how they protect themselves.

The key is to treat these moments not as setbacks, but as opportunities to show consistency.

Here are 6 secure attachment steps on how handle conversations from their stored memories:

1. Acknowledge without defensiveness

Don’t minimize what happened or try to convince them it was nothing. Acknowledge what they’re saying before clarifying. For example:

“I understand why that’s still on your mind. I know it hurt you.”

Acknowledgment calms the BS Detector; it shows them you’re not trying to hide, erase or minimize what happened.

2. Clarify with honesty

Once they feel acknowledged, you can gently clarify where you stand now. Own everything with honesty and communicate clearly what you’ve learned.

For example:

• “What happened then doesn’t reflect who I am now or how I want to show up with you.”
• “Here’s what I’ve been doing differently since then.”

This is secure accountability; the kind of apology avoidants want to hear to reassure them that the past won’t repeat itself.

3. Don’t over-explain

Anxiously attached make this mistake all the time. Your attachment style is programmed to “do something – anything” even when it is counterproductive, it escalates or irreparably damages things further. One of those “do something – anything” things you do is defensive over explaining.

Defending yourself excessively or over-explaining why you did what you did to a fearful avoidant is minimizing their experience – this is why they get more upset and even angrier.

They’re not just upset by what happened, they’re also upset by your reaction to how they’re reacting. This is one of the reasons why I discourage my clients from writing long letters explaining what happened.

Letters often come across as justification or persuasion – and keep a fearful avoidants BS Detector on alert even longer.

What a fearful avoidant will do with the long letter is comb through it with a fine-tooth comb, looking for inconsistencies, half-truths, contradictions, or anything that doesn’t quite add up. Instead of feeling reassured, they often end up more suspicious, because their BS Detector locks onto the gaps in the explanation or wording that feels “off” – and that becomes the focus rather than the intention or effort behind the message.

For example, you might write, “I’ve always been honest with you,” but if they can remember even one time when you weren’t fully transparent, that single memory will outweigh the entire point you were trying to make. It doesn’t matter if 95% of the letter is heartfelt and true, the 5% that feels inconsistent will become proof that they’re being lied to – again.

4. Focus on repair not explaining

When a fearful avoidant’s BS Detector is active, less is more. Instead of trying to convince them with explanations or long justifications, focus on repair.

1. Keep communication simple and direct. A few genuine sentences are better than a page of explanations. For example: “I understand why that hurt. I want to do better, and I’m willing to show you through my actions.”
2. Respond to the moment, not the past. Rather than revisiting everything that went wrong, stay present. Show them safety by how you show up now.
3. Invite trust gently. Ask, “What would help you feel safer with me right now?” instead of assuming or over-explaining.

By keeping things short, consistent and actionable, you take away what their BS Detector would otherwise pick apart. You instead give them proof of consistency, and trustworthiness.

RELATED:

Hidden Effect of a Memory Text on a Fearful Avoidant Ex 

Words an Avoidant Ex Remembers – What You Say Matters a Lot