Hi, SweetP. This is Magdlyn. I'm not sure if you missed my post above, but I addressed many of your questions, and provided links to articles which went further into some of these topics. (You responded to Evie, Kevin and GG, but not me, so maybe you missed my info.)
I answered this above.
So it sounds like you're saying your husband has been seeing this woman all year? Do I have that right? And he was given the green light by you to just have sex now and then, but not date her?
And you also agreed that you would both meet a woman together, someone neither of you knew before as a friend? Like, meet her on a dating site, at a party, at a club, at a local polyamory group meet-up?
But now you either sneaked into hubs' phone, or were given permission to read (I asked above which...?) and you see they've been dating regularly, having sex regularly, and hubs is even saying "I love you" to her. So this has been going on for a while, much more intimately than you were led to believe, and you haven't even met her yet, much less started a kind of "sister-wife" suggestion and arrangement.
Is that your problem?
You want to be involved with this woman, even if you don't have sex with her (not sure if you're even bisexual). You want a woman, ultimately, who wants to be around your house a lot, with your four kids, doing household chores and childcare with you? And maybe having sex with your husband (if not you) now and then?
So he originally said he wanted one woman, and you had to be in relationship with her too. But meanwhile he's been carrying on with her one-on-one for months, and you haven't even met her yet. And you're not supposed to get a partner of your own of any gender... Something is fishy here, for sure.
You can "do research" by going to the part of the board I linked for you, with all the articles and books. You can also search terms here, like "kitchen table poly," "triad," whatever, to find many threads on these topics. (We've been around since 2009; there are tons of great stories and solutions people have shared, from their own experiences and struggles just like yours.)
Has your husband suddenly agreed to stop texting and seeing this woman, after all these months, and being in love?
Do you consider that he's been cheating on you all this time?
He's been seeing her one-on-one, so either he didn't understand what you wanted, or he did, and proceeded to do what he wanted to do anyway.
Sex can be very bonding, so I don't get your reasoning.
A hinge is a partner who has two partners. The relationship forms a V shape. In this case, your husband is the bottom point of the V, the hinge, and you and the other woman are the arms of the V.
See our Glossary for more common poly terms.
Except, it sounds like hubs didn't have your consent to do what he's doing, so this isn't polyamory at all, it's just cheating. Polyamory requires full knowledge and consent of all parties.
Something tells me you're going to get some pushback on that desire, since hubs "loves" her so much. You seem to want to "veto" their existing relationship, tell them to end it. Many people don't take kindly to a third party (you) telling them how to operate their relationship.
But maybe hubs will agree to
taking a break from dating X in order for you two to get some counseling. Because, girl, you two are NOT on the same page, not even the same chapter of the poly book.