Watching my wife

My wife would never would think about letting me watch her.
Hut it happened one night when she didn’t know I was. She is 38 petite and we have 3 kids. We were out at company party at Xmas time. I knew my wife has a high sex drive and she always wanted sex almost daily. I had teased her I have trouble keeping up with her energy in past and I had secretly watched her masturbate in bathroom when she took a bath through window.
That is erotic but this night was over the top.
She had been drinking all night and she has this personality that draws men to her. I noticed this guy a few
Years older talking to her a lot at party .
It was after
Midnight and I thought she had went to bathroom , I go look for her
And step out back door and hear her laugh
It’s pretty dark and I go around corner and I could see her behind a car talking to that guy laughing and talking a drink in her hand and he was slide to her I sneak around where I could see and just in time to see him slipping his hand up her dress. She leaned back against car and he was kissing her his hand working vigorously under her dress and soon she was rocking her hips and hanging o to him as her legs give out obviously orgasms.
She then leans down he was over 6 foot tall and she is only 5 foot so she was able to to without getting on her knees and she started bobbing her head. Soon he came and they quickly straightened up and came back inside separately.
She was close by me the rest of night and we went home about 2 am where she was horny as ever and I was from watching. I never said a word and the sex that night was better than ever and the next morning again.
Afterwards I told her I saw her. She started to tear up out guilt and I told her I wasn’t mad. So this worked and is how I got her comfortable with the idea of sharing her with others.
I like the idea of sharing her affairs with her. The guy don’t know I know and she has hooked up with him several times times. It has don’t nothing but increase our sex life.