I would not go on a "date" as I think she is looking for justification for her actions
This would have nothing to do with "her" justification. She ALREADY has justified what she has done and is doing. What she was doing by telling AFWAW this was TESTING him. (women sometimes don't come out and tell us what they think, they do things like SHE DID. They TEST you because it is safer) She outsmarted him and got what she wanted. She put it this way instead of ASKING him if he had met someone. It HAD crossed her mind in the past few days (revealed by her drive-bys at his work) because he was starting to "help" her to feel that he had possibly let go. Saying it this way made it look like it was her idea if he said yes, and got the answer she secretly was wondering about if he said no. (no he wasn't dating and "would not date") AND it went right OVER HIS HEAD WHAT SHE HAD DONE because of the way she manipulated the conversation.) Once she was validated that AFWAW was still there she could hold off on making a decision and wait out to see if the OM was going to come back to her. It was a "smooth" approach on her part and got the necessary results.
He did not pass the test. He should have let her believe not only that he may do it, but that he had been thinking about it for some time. (which I secretly think most men on here DO think about and I DO think many men on here secretly visit the dating sites while telling the rest of us that they are "standing for the marriage")(You can't fool a guy...guys ;))