Does anyone have a correct understanding of ‘adultery’?

This happened a year ago and I have since discontinued the affair. My wife never mentioned it again, but her indifference is suffocating me. It would have been better if she had gotten angry and shouted at me.

Sometimes, I had no idea what she was thinking as I caught her staring blankly into space. She looked at me with emotionless eyes with no love or affection in them.

Now, I even feel guilty eating the food she cooks, so I usually suggest dining out. I feel grateful to her for keeping my affair a secret, but at the same time, I feel like she hasn’t truly forgiven me. Should I initiate our divorce?

I’m not making any excuses for my mistake, I just don’t know if people actually ever understood the meaning of the word “adultery.”

I also don’t understand if marriage has anything to do with sex. As far as I’m concerned, these two concepts are entirely different. Sex is conditional but it cannot just happen because you’re married.

Isn’t it mankind’s biggest mistake to assume that marriage must equal sex?