Hi Mrs P
Sadly, for those of us who have been in R for some time it is true it never goes away completely.
I think it get's worse for me when I am not feeling connected to my wife. Coincidences do happen, and anyone can lose faith at any time. It is a choice to take steps to remedy that loss.
I see it like this. It is one of the most significant experiences I have had in my life. It was as life changing as anything else. Why wouldn't I remember those events.
The thing is on my days I can tell myself that my W has been authentic for over a decade. She did the work and goes out of her way to avoid deception and I see that effort all the time.
Triggers, for me, aren't usual a developed thought. It is a sudden reaction that sneaks up on you. It takes me time to use my coping skills and self soothe before asking my wife for assurance.
In short even though the work I have done is present it takes time to work through trigger. I don't get them near as often, but I am human. If you cut me I bleed.
I can tell you that experiencing a trigger over a decade later is demoralizing for both of you. It can lead to hopelessness and despair. Don't go that route. Don't give it too much power or meaning.
So I have some sympathy for you both. The A is always going to be part of your history and you have to find an agreement between the two of you on how you plan to deal with them. What works for me might not work for your H either.
Heck, I think people keep replaying the worst moments in our past even outside of infidelity. It is part of the coping process to assign it meaning and reduce the brain space it takes up.
I've said my peace on IC for your H a long time ago. No need to re-visit.
It is good to hear from you. I wish you a happy holiday season