When it comes to feeling safe, there are two things that helped me tremendously not just for reconciliation, but also for the relationship and the peace of my mind in general.
1) Exploring the topic of attachment styles. As it turned out, even before the betrayal, I exhibited quite a lot of anxious personality traits in our relationship, especially in the early years. I’ve always thought I’m just a little insecure, fearful, and distrustful due to a trauma I experienced in my late teens. However, I had other boyfriends before I met my husband, and I was not insecure with them. Also, I tend to score pretty high for "secure attachment style". What I realized is that my anxiousness was what I call responsive anxiousness. In other words, I’m not anxious by nature, but when my partner repeatedly did things that made me feel worried or failed to do things that made me feel safe, I started to exhibit some anxious personality traits.
My husband has an avoidant attachment style. This was a problem because we would sometimes fall into an anxious-avoidant trap, and there was no proper communication to prevent and resolve that. After all, we were pretty young, and I’d say not mature enough to approach the relationship problems in a proper way. Nevertheless, over the years, I managed to build a lot of trust and I’ve started to feel safe. He was still avoidant, and he would occasionally do something that might seem worrisome, but I was secure enough to rationalize that away. Only later I figured I was actually just making excuses for him in my head. Ironically, the time when I trusted him the most, when I felt the most secure, coincided with the time when he was betraying me. How fucked up is that?! Needless to say, after DDay, my anxiousness system had gone through the roof.
Anyway, exploring the topic of attachment styles helped me to realize there is nothing wrong with me, and that he is at least partially responsible for making me feel safe, loved, desired, cherished, valued… (or, better to say, for not making me feel unsafe, not loved, not desired and so on). I believe it helped us to understand each other a bit better, identify concrete problems and situations which trigger our attachment systems, and to work on improving that. I wouldn’t say we are 100% there yet, but there is a significant improvement. The book that helped the most (we read it together) is Attached: The New Science of Adult Attachment and How It Can Help You Find - and Keep – Love, by Amir Levine & Rachel Heller. Once he started to let go of his avoidance, I’ve started to feel I’m really valuable to him, and it became easier to let go of the fear of future betrayal. Which brings me to the second thing.
2) Realizing that indeed I am valuable. Even though I’ve always had a very high opinion of myself, and I’m one of the betrayed spouses whose self-esteem was not impacted by the betrayal, it is true I felt he thinks I’m not good enough for him, so eventually he’s gonna leave me / I’m gonna lose him. However, after the betrayal, I’ve changed my mindset. I am the prize, and if he leaves me / betrays me again, I’m not gonna lose him – he’s gonna lose me! Yes, he is smart, attractive, successful… but he is also a man who betrayed his woman. On the other hand, I’m also smart, attractive, successful… and I’m loyal and trustworthy. I am freaking awesome, and if he betrays me again, he will be the loser, not me! He is well aware of this change in my mindset. Howcthappen, honey, you are the prize! Stop being afraid of losing him, and you will see the fear of future betrayal disappearing.
Now, you can say it is possible he’s gonna go further underground, and you will not know about the betrayal. However, I wouldn’t be so sure about it. I believe betrayed spouses develop a special sense for betrayal detection which will stay with us forever. Even if you relax, stop living in fear, trust… the sense is there within you and it constantly monitors the environment, even though you are unaware of it. It will warn you if needed. Trust in yourself.
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As for the poor lowlifes you mention – they are too stupid to understand that they are not special, they are just there. If your or any other husband thinks that’s better prize than their spouse, well, then they’re not really a prize either.