After ten years our sex life was getting a bit stale and needed some "spark". I had suggested many times about having another man at the same time or even on your own, with my permission, (providing I heard all the juicy details) and was serviced immediately afterwards. This didn't fly until she met a friend of mine that really turned her on. Rob is a really nice guy who had broke up with his wife recently and was obviously turned on by my wife. I had suggested to him that we were "swingers" and I gave him permission to have my wife if she went along. I had told her that I thought it would be OK to spend a night with him to help ease his tensions. At first she thought I was joking and it was a fantasy when we made love - that was the end of it. Rob was sparked and started to get very suggestive with her when ever they met. She started to ask me if I was sure I wanted this to go further which I replied yes, she said she would never suck him if anything did happen .Finally she said they had made a date for Saturday night and warned me she might not be home till morning. I said OK not really believing she would go through with it as she had not been with anyone but myself despite my urgings.Saturday came around and I had to go to the city on business - in the late afternoon she called me on my cell phone to ask me if I was sure I was OK with this and warned me she might not be home till morning which I said "go for it". I managed to get home just as she was leaving - she looked hot - skin tight black mini dress with no bra and no panties - I was impressed/surprised - she said she might be home in a few hours - but maybe not. I went through the most mixed emotions - between being very turned on and wanting to puke at the same time. At 2am I tried to go to sleep - didn't work - I jerked off to try and relax - didn't work - finally at 9:30 Sunday morning my beautiful wife came in and I was all over her. I pulled up her skirt and her pussy was drenched! I immediately stripped her and asked how it went. She said he had a gorgeous cock and he was a talented lover and wanted to do this again.I asked if she made him cum which she replied yes - three times ! I started balling her and I have never felt her so wet. I asked if she sucked him which she said yes - including his balls - and swallowed his cum before she left! Rob told her that no-one had ever sucked him like my wife had and wanted to go away for a weekend with her. At that point I said whoa - time out. Our sex life has improved tenfold and I am definitely giving her more attention; which she wanted all along; debating now whether to let it happen again. All I know is this has worked better than Viagara and she is more confident and dressing much sexier than ever and acting very sensuous. I helped create a monster and I love it!