I am going to take your "arguments" in context for simplistic sake.
There are laws against stealing, right?
Your wife has stolen property.
You look at this scenario and say to yourself, "Hey, W is doing it. I might as well steal too. W has compromised herself morally by stealing...a criminal, blah blah."
Does this mean that you are emotionally okay with stealing without conscience? Does that make it okay for you to steal too?
This is the exact same point I am making about your so-called desire to "date" just because you point at W and yell...."well, she's involved with the OM. She's a bad woman for getting into an A so I shall date."
Do you see how crazy this logic is???
Again, are you wanting to "date" because you've reached a point of no return and feel completely at peace with this. I think not. It is more of "hey, I can play this game too!" This is the central point of your own motivations to date.
This is why we are all urging you to dig deep and really take a hard look at your true motivations to "date" others.
To me, you are making intellectual arguments (i.e. cultural norms, societal views, etc.) to deflect attention away from your own true motivations.
When one strips away the so-called cultural norms and other intellectual arguments, then one's left with the inner nudge that informs you that one is being out of alignment of your heart center.