I knows of two marriages where one spouse complains they don’t feel desired and don’t feel a connection.
In marriage 1, it was the DH who complained about the lack of sex, the feeling of not being desired, the lack of closeness and connection. However he ignored the reason. The DW felt run ragged, carried all the mental load, worked full time, did 80% of the child care, 90% of the housework and 100% of the mental load. The DH pursued his hobbies and social life. DW was resentful and exhausted. She tried over the years to get him to support her and step up, but he made every conversation into a conversation about the lack of sex. He never took an interest into why she didn’t desire him. Answer: because he was selfish and acted like a teenager = not sexy! But he only wanted to talk about his needs not being met and he had no interest in finding out why or what her experience of the marriage was. They are divorced.
In marriage 2 it is the DW who complains about the lack of closeness and how she doesn’t feel desired. Again though she takes no interest in why that might be the case. She complains about DH at every opportunity and isn’t very nice to him. She blames him for anything and everything. He has stopped spending time with her as he is fed up of the constant fault finding and criticism. She blames him for not spending enough time with her, but she never asks why. He has no desire for closeness anymore and has given up on the physical part of their marriage. She also blames him for that.
So it doesn’t really matter if the OP is male or female really. What matters is why the other spouse doesn’t desire them. Why they don’t want closeness. What drives them to have emotionally and physically detached? Because it will likely be the “betrayer” who has caused this. Everything in OP’s posts point to a complete lack of empathy for the needs of the betrayed, be they male or female. Everything is focused on their own experience. Their reasons for the betrayal (as opposed to the reasons why the other party has detached from them). A flowchart detailing the betrayer’s experience (as opposed to the reasons for betrayed not wanting a physical relationship). Other than the spouse wanting OP to come on this holiday (and them refusing: another showing of lack of empathy, lack of meeting spouse’s needs), there is no reference to the experience of the betrayed spouse or their needs at all. Instead OP has spent their time arguing, rationalising and making flowcharts. To me this strongly suggests OP is a man, but ultimately it matters not. What matters is that they seem not to possess the required level of soul searching and empathy which would be required to come back from infidelity. Which I guess answers their question!