Update
Hi Folks,
Well, Brenda and Andy's relationship is really going strong. Andy practically lives with us now, and stays at his place only an average of 1-2 nights a week. He shares an apartment with a (male) friend, which is close to his work. He only goes home if he works really late, which is not often.
Andy has quickly gotten used to the fact that I am not only okay with Brenda's sexually exclusive affair with him, I am quite aroused by it. Unlike Brenda's past lovers, who were hesitant about showing affection to Brenda in my presence, Andy seems to get off on it, though never in a humiliating or mocking way.
For example, last night the three of us were watching a movie on NetFlix, Brenda and Andy on the sofa, and me in my favorite recliner. Andy proceeded to snuggle with Brenda and, as things progressed, he was touching her and kissing her passionately, with the two of them pretending I wasn't there. After awhile, Brenda and Andy were lying on the sofa, with Brenda straddled on top of Andy. Though they were fully clothed, it was really hot seeing Andy fondle Brenda's breasts under her shirt, and Brenda grinding her pussy against Andy's crotch as they kissed deeply.
Then, after awhile, Brenda stood up, took Andy by the hand, winked at me, and led him upstairs to the master bedroom. Needless to say, I just couldn't resist going up the stairs quietly to hear the sounds of their passionate lovemaking through the bedroom door, after which I retired to my room.
On the occasional nights when Andy doesn't stay the night (he is good about letting us know well in advance), Brenda and I still have our alone time cuddling, with Brenda telling me all about things she does with Andy, and sharing with me her feelings of love and passion for him. She is absolutely glowing these days, and it gives me so much pleasure knowing that my wife is making passionate love with Andy on a regular basis. Brenda never makes me feel neglected or unloved, however, even though our marital sex life is on hold.
Brenda still asks me on occasion if things are okay for me, reminding me that she would end things with Andy if I ever asked her. I have never felt the need or desire to short circuit Brenda's affair with Andy, and am fully content, as always, to patiently allow their relationship to fully run its course, though I must admit that there are currently no signs of it waning.
Rick