Fooling around with friends or relatives of your wife or girlfriend is never smart, but all too often these are women that you have frequent contact with, they get a little too comfortable with you, even flirtatious, assuming that you are, safe. I remember once visiting my wife's sister and brother in law, and she came out prior to going to bed in a revealing shorty night gown and plain white cotton panties. I'd never been sexually attracted to her, but, as she bent over to get a book from a low book shelf I had an instant boner. Nothing ever came of that, but it illustrates how easy it can be for other women who are close to your wife to forget that you are a male.
In college, one of my more serious girl friends was going to college in a large Northern city. We were talking on the phone and she asked me if I would stop by and visit a friend of hers who was really depressed over some issue with her boyfriend; I'm not sure it was anything serious. He was away at ROTC summer camp, she couldn't talk to him and was just feeling blue. Looking back, I don't know what my then girlfriend was thinking.
Linda was a hottie, I hadn't seen my girl friend in over a month and was at that age when all I ever thought about was getting laid...well that's all I ever think about 35 years later!
Linda was home from college, having a different academic schedule than my girl friend. I called her; she invited me over to her parents' house---what could possibly happen? Her folks had a rec room in the basement and were not the type to just barge in. Plus, they certainly couldn't have thought anything was going on. Linda was engaged, I was dating her best friend, they knew their daughter was a little down, no big deal.
Linda was physically as different from my girl friend as any woman could be. I was dating a tall, long legged brunette with a full rear, small tits, hair to her waist and an innocent and cute, if not beautiful face. Linda was shorter, probably five three, blond, a very compact and evenly proportioned body, very pretty with a maturity in her eyes that belied her age. She was also flirtatious from the moment I arrived.
We were talking about, of all things, how a guy knows a girl is ready to be kissed. I told her I had always been able to just sense it, and in my experience had never been rebuffed. She was kidding me about my sixth sense, almost daring me. Without a thought I kissed her, and my sixth sense, once again had served me well.