From a straight female point of view... I've often had a very difficult time fending off the gropey women. The few times that I've gotten up the chutzpah to say to the woman groping me "I'm not bi"... she's responded with "neither am I'
Most other times.... the women are very much into playing with another woman....when their male partners are there. Is this a form of foreplay? And if I enjoy watching men together, how come I don't get that option, too?
It has been assumed that as I am in a swinger club or event, I must be bi. I'm not. I don't MIND women or their sensuality...I just don't want to play with them near as much as I want the men

Do the women 'pretend' for the foreplay benefit to their male partners? And are there some men that 'pretend' for the benefit of their female partners?
I would really like to know what this 'bi woman' draw is to swinging.
Real or manufactured or staged or...... ?