Does it have to be a threesome? My wife certainly would never consent to that and I can not imagine her accepting the fact I've been having sex with another guy on the side. In fact I find myself tempted to go beyond my lover of a year and have the same kind of sex with a second guy. Still no threesome, just some hot one on one action.
I say that it is not necessary to have a woman involved although a lot of guys seem to believe that it is necessary or, at the least, desirable. If you are certain that your wife or lady isn't going to agree to having a threesome and would lose her shit to know that you have sex with men, then why ask for it - and why ask for trouble? If you've been able to get some dick without involving her, then keep it going and if you take on a second lover, well, just handle it and have fun.
I don't think there is any reason why it needs to be a threesome. M+M and M+F works, as does F+M and F+F. On the other hand, you are asking for trouble by concealing other relationships from your wife. The combinations don't matter, but the concealment does.
I must agree. Keeping things in the open is much more honest and loving. My wife knows of my interest in cock, but we haven't done anything about it yet. If and when we do, she will be by my side the whole time. I'm looking forward to it and if it doesn't actually happen, we have our fantasies.
For me a woman had to be involved in the beginning or I don’t think it would have ever happened. It was my first serious girlfriend who coaxed me into a threesome with another guy, after we had a few experiences with women. Nothing was said about what would or might happen, I was very nervous to say the least. Afterwards I struggled with the knowledge that I liked it and wasn’t supposed to. Eventually accepting that I like it and that’s all that matters. Now, while I don’t need a woman to be involved that certainly enhances the experience.
I think it is necessary to have your wife or girlfriend involved even if it's just her acknowledging that you're having sex with another guy and she's okay with it. If she doesn't know but finds out it will most likely be disastrous. My wife knows and has no problems with me having sex with another guy but that's as far as it will go She will never join in and I highly doubt she would ever even watch.