I know how you feel, as I was in a similar situation once.
My husband lost his wedding ring on a stag weekend about 10 months after we were married
.
It had been a rough start to our marriage as we found out my Mum's cancer was terminal when we got back fro honeymoon. She died a few months later (I was only 28) and obviously it affected me a good deal.
DH was on a stag weekend and they had gone to a nightclub. Some of the men took their rings off and DH went along with it - and it got lost.
He was mortifed, obviously, but I never doubted his story. He is not the cheating type (terrible with women
). He said that he had found dealing with me after my mother's death really stressful and just needed a release from it and to feel 'free' for a while.
I was heartbroken. Heartbroken that the person I thought I could rely on wanted to escape from me, even hypothetically for a few hours. I felt like all my faith in him had been shaken. I felt sure he couldn't cheat on me but, until then, I had also felt sure he would never remove his ring in a nightclub.
We had a rough couple of weeks and did a lot of talking. He knew exactly the damage he had done and exactly what he had risked losing. But we are still married 10 years later.
You know your husband, and if you believe him, then you believe him and we are in no position to comment.
However, this does not let him off the hook, nor the fact that he didn't cheat, or that he wouldn't cheat.
You don't want to feel that the only reason your husband isn't cheating is because he was unsuccessful.
It reflects a problem in your marriage which you do need to sort out and talk through. It's not going to get better by sweeping it under the carpet.
Good luck.