Originally Posted by NIMchimpsky
You could introduce him to the movie Vicky Cristina Barcelona
. This movie features a FFM triad. By watching the movie he might really get what you mean by your two-wheel-to-three-wheel analogy.
While that is a lovely movie for many reasons and may show an idea of what polyamory can be, I have to say, it's a pretty unhealthy
example of a triad relationship. Just puttin' that out there.