People tend to gravitate towards other people they feel at ease with, that could be a certain kind of sex or a mixed group. To a degree, it depends on the individual, they will pick up on a sense of that person and try to interact with them, be they male or female.
As a species, we all need variety and stimulation within the confines of a social situation, and we tend to move into groups or interact on an individual that feels safe, with safe topics.
Communication is key, and people tend to place themselves in situations where they are either involved aka, speaking from a position of knowledge, or they are observers, aka learning via listening.
In a family context, and as a couple, we tend to enjoy that time around adults whilst sharing our time with our children. We will be the observant parents, with one eye on our children, but also enjoying the stimulation of adult interactions. One of us always has our children in view, even though we are talking, it has over the years become like a ninja skill that has unconsciously developed between us as parents, as we are both aware that we are working together to watch the children, even though we are interacting with others.
Like anything that holds and interest from a past time, all of us will happily contribute to social interactions if we feel the subject matter appeals, again for us, talking books, music, politics or naturism, if we feel we are in similar company, we will happily contribute.
We feel, this works at it’s most effective when there is a wide and varied range of people from all walks of life to interact with, as we can be involved, contribute, and also learn more things. This is possibly best illustrated in our own interactions at the Worsley swim, which is multi generational, couples, singles, and children.