Originally Posted by ellie
Forgive my ignorance but what's a cowgirl?
A cowboy/girl is someone who pretends to be polyamorous but is really interested in being in a monogamous relationship with one of the members of an existing poly set-up.
In the same way that a "cowperson" would throw a rope onto one head of cattle in an attempt to remove it from the herd, so does the "cowperson" try to remove a polyamorous person from the "herd", although the latter typically uses psychological and emotional "ropes" to do so.
It's what we call a "metaphor".