Originally Posted by SchrodingersCat
I wouldn't worry about defining it. Labels can be useful for quick reference, but people tend to get stuck in them and start using them to take cues on how to behave. That's always seemed silly to me.
You and she sound more like close friends than romantic partners. "Like a sister" isn't how I would describe my girlfriend, even though our relationship is non-sexual. We have a romantic, loving emotional bond, just without the sex. So even if I were prone to using labels, I wouldn't call your situation an emotional triad. That would imply that you and she are romantically involved, and it doesn't sound like you are.
It's nice that you've found this connection and that things seem to be working well. Have you discussed how this changes the nature of your relationship? i.e., if you met a woman with whom you felt an emotional and sexual attraction, would your partner support this? Of course, there might be no need to have that talk until that actually happens (putting the cart before the horse and all that), but it might not be a bad idea to establish that what's good for the gander is good for the goose
We'll see if we ever have to have that talk haha... I'm sure if it ever did happen he would be as supportive of me as I was of him, but honestly, I don't see it happening. I would love to have a casual female friend to get out urges, if you get my drift, because I think it would probably be emotionally a little unhealthy to never really explore my bisexuality on my own. But emotionally, I can never see myself loving anyone else- but then, neither could Boyfriend, until he met K. Even if they didn't recognize it at first, there was definitely some connection there and some strength that was enough to make our relationship waver a little, before I became this accepting. So I guess you never know with those things