Threesomes/Unicorns.🦄

Moriah

So I’m bisexual and I’ve been wanting to have a threesome with my SO . He’s super open to it, and We’ve started looking into finding a unicorn (a third person) . But every time I bring it up to females they get super rude and nasty. I am always very sweet , kind, and open minded with the women I ask. So I don’t get the backlash. What should I do to try and find a unicorn?? Or should I just say forget it and give up???