Welcome to our forum.
Heh, I watched "Paint Your Wagon" not too many years ago and thought it was a fun show. The show "Bandits" (2001, Bruce Willis, Cate Blanchett, Billy Bob Thorton) has a similar polyandrous motif. A couple of heavier shows I like a lot that involve an MFM V are "A Small Circle of Friends" (1980) and "December Bride" (1990).
Anyway, hope you enjoy your time on our site; you will find a lot of good people and information here. Have a look at some of our threads and see what calls to you; post any thoughts or questions you may have.
I'm glad you could join us.
Love means never having to say, "Put down that meat cleaver!"