It wouldn't bother me at all. I compete with guys, I couldn't be jealous of a woman. If I loved a woman and she was bi, I'd be okay with her having a girlfriend on the side. (It would be better if she let me watch) --- but no guys -- then I'm jealous.
Actually since I'm living aboard and fixing up a small cruising sailboat, I've thought three is a good number for sailing into the sunset years...mff...if it was a ltr. Has to be real. Mother and daughter maybe. I'll keep working on the boat