My wife had started to get upset about our dwindling sex life. It had happened less and less over the past 5 years because it just wasnt turning me on anymore.

I don't think I am into normal vanilla sex, it just doesn't do much for me and I lose interest quickly. I've slowly started to realise that I'm quite a kinky person and I'm tired of feeling like there's something wrong with that and I need to change who I am.

My wife suggested opening up our relationship last year so that she could have regular sex again. But she's the type of person who cant have sex without having feelings for the person.

She had someone in mind already before the arrangement. It was a married coworker she had started working with 6 months ago and had become her best friend at work quite quickly. They were constantly messaging each other and going for drinks after work just the two of them and I saw messages on her phone of him getting more flirty like telling her she sounded cute on the phone. So I had a feeling she might have him in mind. I'd pulled her up on it before and was worried she might leave me so I asked her to stop, but part of me was also very turned on.

I agreed to the arrangement, knowing inside that it was give me surprisingly high levels or arousal thinking of it.

The very next morning she went into work and started heavily flirting with him. She started touching his arm and running her hand through his hair while they were sat together. Then she kissed him and he kissed her back. She told him about our arrangement and he was confused but was happy with it. Apparently he'd always wanted to do something like this.

After that they started going to hotels together on weekends and she would tell me about it afterwards. How he could go all night unlike me and he would just take charge and dominate her, just how she likes it. How she orgasmed over and over. And she would show me messages between them going on about their time together, how she misses the taste of his dick and bouncing on him and she dreams of him being inside her. They were eventually saying I love you to each other. I would send her messages of encouragement saying to enjoy getting fucked tonight etc. and tell him I said hi.

It got to a point where I was allowing them to come to our house for the night. I would go out somewhere but beforehand I would help her to make the room romantic and tell her what I wanted her to do to him and she would tease me.

I'm struggling to get further than this though because she feels too embarrassed to involve me in it. She won't even let me set up a camera because she thinks it would be a bit too weird and he wouldn't be happy about it and wouldn't want to do it anymore. So the most I can do at the moment is get off to the thought of it and the stories and texts

I know that she is planning to be with me in the long term because after all of this we have bought a house together for the first time with a mortgage. So I'm pretty sure she's not going to leave me, I just need to convince her that while we love each other the best way forward for our whole life together is for us to have a kinky open relationship where she gets to fuck whoever she wants in front of me and humiliate me for my pleasure. It's win-win really.