The wife hooking up with co-workers (hers or his) is very hot. My ex-wife had sex with my boss for a couple of years. During that time she also had sex with a couple of my co-workers. She had sex with some of her married professors in college. When she graduated, she seduced her very first boss. She had sex with him for a couple of years and also a few of her co-workers.
My wife Kate has been having sex with her older married boss for years. She also had sex with a divorced guy who worked for me for about a year at my suggestion. She also had sex with a couple of different clients of mine at my urging.
I hired one of Kate's married boyfriends I had never met. He had been fucking my wife for about six-months when Kate mentioned that he was looking to change jobs. I had a position for which he had the appropriate skills. We met at lunch for an interview. He was pretty nervous interviewing for a job with the husband of a woman he was fucking. I told him right up front that whether or not he got the job he could keep having sex with my wife. hired him and he continued to date my wife.