Family based Career

My career is working for the family business interests, I'd to start at the bottom and then was promoted to next level once I knew each level operations. Now in middle management no further promotions until a family member retires or dies. But I'm married 2 children, and marriage is taken very seriously in our family. My wife is great but lacks my sex drive and I was thinking of having an affair. But if caught I would be kicked out of the family for sure. But if I could keep it perfectly secret than no worries, that I was told by uncle. But he added women tend to want to marry, there isn't many if any who just want to be second fiddle to a wife for very long and if you break up with them, they make waves. My uncle could see me getting the roving eye as he called it, so he gave me that advice. I understood, but I wanted more sex I wasn't into fucking hookers. Thinking about possible ways seemed to always end with trouble. Until I saw the perfect answer to my sexual need. Dating women around my age or younger would pose trouble, but mature women wouldn't be interested in marriage or making trouble. But finding a fuckable woman in her late forties or older wasn't an easy task. But luck was on my side, with my assistant leaving to care for her mother-in-law fulltime. She was married and in her early forties. Normally I would be given another, but my grandfather had stepped back at bit which had allowed my promotion into a newly created position (added to my current job really). He had two assistants, a personal assistant 59 and her assistant 54, only needed one so I was given the PA's assistant as my new assistant. Pros and cons, the pros were that she knew the company operations completely, the cons were that she knew the company operations completely. But she looked hot and really was MILF, problem she was far too assertive. As I said luck was on my side, she had lost her husband just over two years earlier and she like sex about as much as I do. She too saw my eye wandering like my uncle had, but she had a better idea for solving my lack of regular sex. Her solution was to provide me with sex; in her book it solved two problems. The first her lack of sex, the second my getting caught and her having to train another boss. Yes, it was part of her duties to make sure I knew what I was supposed to be doing. Her view of what was require came from working with my grandfather, which gave her some authority others weren't willing to challenge. She was still on first names terms with my grandfather, only two staff held that privilege other than family members that is. One was still working with him, and my new assistant was the other was my new assistant. She made the first move and I at first a little shocked but willing accepted. To her it was just sex for our mutual satisfaction, to me it was a great boost to my sex life. My wife liked my new assistant, who joined us for dinners at my home. After two years no promotion available still, my assistant had also taken on my wife's lack of interest in sex. She was now close friend with my wife and she got me. to take the children out for several hours. In which time she seduced my wife and after several more such sexual events, joined me and my wife in a threesome. Which is more common down, so much so my assistant lives with us. She told me it is better not to have secrets if you can do without them.