<human>: Us in our late 20's. Together 7 years, Married 6 years. My wife apparently never understood men and I am only her second real relationship. She asked me last week why I look if a girl walks by. 

I explained to her how men have a radar and can pretty much pick a girl out of a crowd and can't help it. It doesn't mean anything and I usually look away.

She was hurt. She took it as if I had cheated on her by being honest about the way men work and how we evolved etc and I just went into too much detail.

We fought for the last week and I've finally told her, look its how men work, I could get hard from just getting up off the couch too fast, it doesn't mean I want to hump the couch. Automatically focusing on an attractive lady because she walks by doesn't mean I have any intentions or thoughts about it.

She doesn't understand how much I love her and is really hurt and in a lot of pain. She said she understands but can't help feeling hurt and that she still loves me but is afraid I will run off with some girl. She expected more from me as a good/moral man. Somehow I disappointing her by being human.

Any advice?

Can you give me the gist of the text in a nutshell?
<bot>: Wife saw me glancing at people without really realizing it, I told her how men work, she thinks I am a cheater