This screams of a lone bi/lesbian woman fighting for her life in a bumfuck Christian flyover shithole, trying her best to find the genuine love of another woman who cares about her instead of her dumbfuck religious moron husband she was forced to marry, instead of risk being ostracized by her local community and accepting being a bi/lesbian. Her selfish republican husband sees this as a win because he gets to cheat on his wife with women without hiding the ones he already likely bangs on the side anyways.
That, or she is a super fundie that agrees with actual biblical marriage. Where the husband heads a household of as many wives, and kids, as he can afford.
Every time I see something like this, the couple is looking for another woman. Where are the bisexual couples which are looking for another man? Do they not exist or do they just immediately find such a man and go off the market?
They do, but are fewer and further between. Research studies have shown that there is a much higher proportion of bi/pan women compared to men in the US. So a triad with two bi women is gonna be much more likely to occur than one with two bi men.
"unicorn hunters" are a well known trope and generally looked on with scorn within ethical non-monogamy / polyamory communities. They're almost always a bad kind of hierarchical, and usually don't see the new third person as an equal, whole, person.
I'm going to guess that bisexual men looking for another man are slightly less likely to be this particular kind of dehumanizing, but I don't have any data to back it up.
God, I should probably post this on my alt but fuck it. Women being bi is more socially acceptable than men, but no way are more women than men actually bisexual. But yes, men willing to threesome are easy to find, straight or bi. Women who want to MFF are less common, therefore they are unicorns. And no I don't understand it because which is sort of threesome more fun for everyone? Obviously it's the two men, one woman sort. So many possibilities!
My impression is that MMF is the sort of thing men imagine they would like if they were straight women, but not actually the sort of thing straight women like. I mean, if straight women liked it, wouldn't it be happening all the time? But I (a man) have never been invited..