You have got a number of good suggestions and ideas posted to your thread so I want to go through some of them.
Some things we all agree on;
This is infidelity. You are experiencing infidelity no matter what. Your wife has shown emotional attachment, sexual attraction and very likely sexual activity to someone outside the marriage. There seems to be some ambiguity in whether they had “sex” or not but keep in mind that you can define sex from the pov of the beholder. If your WW thinks she had “sex” whereas OW might think petting or grinding isn’t sex then your wife had sex.
Another issue we agree on is that IF she is bisexual then she chose to limit her sexual activities to you with her marital commitment and decision. Heck – even if she’s lesbian then she did the same in deciding to marry you.
Where we might have disagreements on is whether she can commit to a heterosexual marriage as a lesbian.
I want to be clear on this: In my view there is NO WAY a gay person can live a happy life in a heterosexual relationship.
I also want to state that based solely on what YOU post I think she’s a lesbian and not bi-sexual.
Now – let’s look at some comments from your first post:
I distinctly remember asking her if I did something to make her upset. She said No.
True. Because you didn‘t make her lesbian. Your WW wouldn’t be the first gay person that tries to subdue her sexuality and hides behind a “beard” (that’s what you are IMHO – a beard to cover her sexuality to make it respectable). I wouldn’t be surprised if your WW entered the marriage in hope of “getting over” or “curing” herself of her sexuality. She entered the marriage in the hope that you being a decent likable guy and the sex being bearable… that she could subdue the rest. Only as things go on she realizes that she can’t.
I should mention that we rarely ever had sex. Our sex life was fair before we got married, but generally nonexistent after this New Year's trip.
We may have possibly had sex 4 times this year.
These comments are the ones that lead me to the lesbian conclusion. Look – if she was bi then she would be attracted to you. There would have been some period of passionate sex during your courtship, after the marriage and so on. Come on! Four times in 7 months… that’s low. That’s not bi-sexual. That’s not “I hate his guts and wish he wasn’t here”. IMHO that’s “I really don’t like this act and wish I was doing something else”.
I'm mentoring kids at a leadership conference
The above is the reason I asked about the religious and social background and the views on same-sex relationships. I’m wondering if this activity is church-based and if your guidance to date has been church-based. You haven’t answered that… IF your WW were to go to her and your parents and say “I am a lesbian and I want to live an openly lesbian life” how would they react?
To be clear on this issue: I am a person of faith.
She told me that she didn't think that she loved me anymore, she couldn't see herself having kids with me, she was confused and that she was only happy when I was away.
We kissed for about 10 seconds and she said "There's just no passion!" I said, "What? From me?" She said, "No. From me. I just don't find you physically attractive. It's not your appearance, I just don't find you physically attractive."
Well… IF she’s a lesbian then that’s clear. Note she doesn’t say she hates you. Why happy when away? Because she doesn’t have the sex obligation hanging over her. Doesn’t have to be something she isn’t.
I negotiate for a living
So do I. Well… a large part of my job is project and crisis management. That involves a lot of negotiations.
So you assume you can negotiate anything… IF she’s a lesbian and IF you want to negotiate her into committing to the marriage then try this exercise:
Imagine your best male friend. Imagine how negotiations would go if you were making a living-arrangement deal. Imagine he expects sex 1-2x a week. Using your negotiation experience you can get that down to once every 6 weeks (about your marriages average). So from 9-12 instances of sex you have gotten it down to 1… Does that sound like a successful deal? Think you could cope with getting down on your knees and bending over every six weeks?
Would the deal be sweeter if you got it down to once every six months? Or does the thought of same-sex intercourse throw you off?
Think that if you look at the other benefits of the deal – better joint income, social status, expected lifestyle… - will make the sex issue acceptable to you?
This is the deal your wife took. Albeit without telling you.
This is the deal YOU are trying to broker.
IF you are experienced in negotiations then a key factor is knowing when to stop.