You aren't 'getting closer', you are getting further apart. She is 'banging another dude'!
It's a big bang with a cartload of dynamite.
There is no 'getting closer' whilst she is in an A unless you agree with poly.
As I said you are being mugged and talking a lot, that's not closer. You are Plan B.
Her A is her responsibility not yours and these backlashes are the consequences. In actual fact you now know she is doing this to keep you quiet on her A. In my view you can be as open as you like about this and never lie to cover it up. If asked you say 'my WW is having a PA with dingbat' and you also tell her that you will never lie about it.
Stop validating her behaviour and feelings about it. She clearly only cares about herself. Because you are validating her she thinks quite clearly (she said so) that you are OK with it.
And you seem to be telling her she can come home no consequences?
Stop talking on the phone for an hour!
Let her suffer the consequences of her behaviour and feel sorry for herself then take action to atone to you.
All I see is a H enabling his W affair and removing the consequences.
V
Freedom is just another word for nothing left to loose. V 64, WAW