confusedhubby

Im gonna try to make this as short as possible. My wife recently told she is not in love with me anymore. I was shocked and of course my first thought was "is there someone else?" Of course she denied it but my gut feeling told there was. So i investigated and found out there was.
So let me get to the point, she never had intercourse with the guy but every time we talk about it, it gets us both turned on. She wants to have sex with him really bad and I dont know if i can go thru with it. First off this guy is hung like a horse and im tiny compared to him. She states that she is curious and wants to know if she will orgasm cuz apparently i havent been able to accomplish that. My fear is that she will enjoy it and want to do it with him more often. SHe has told me every detail about their 3 encounters and there was a lot of passion behind them. Also I asked her if she will let me watch and she said no cuz she wouldnt feel comfortable. Let me know what you think, thanks...