After some time of reading this kind of posts I have realised people speak about this subject with resentment because they believe it would be the outcome of a mere night of games.
There are consolidated trios out there where the couple has a family friend who is an habitué both of their house and their lives.
If the bull/lover/friend regularly fucks with wifey it would be likely to be something that could lead to pregnancy as a natural consequence after all, because everything proceeds step by step and people get used and less scared of things that with somebody you know very well, with whom you share a lot (both your wife and life views) could be more normal that you would think.
Yes I speak from the point of view of who is seriously considering it
