cam said:.... [Her red dress] isn't what my wife wore to work, so she once again went out of her way to dress up to dance with strange men! Apparently this time she started off with the same guy as last time, then rotated partners half way through to be with a new guy. She said he was an "amazing" dancer.
Sounds like your wife is getting into it. In essence, she's on her way...
cam said:Later that night when we were in bed and started making love, I began talking about it asking her the kind of questions nyccouple suggested. We started getting into it a little bit and I asked her if she could feel [her dancing class partners] get hard when she danced with them. She began moaning, and said yes!
That's very promising...
cam said:I told her that was hot.
Good response...
cam said:We haven't talked about it while not having sex, yet.
If you expand your suggestive comments next time your wife is fucking you... something to the effect you would find it hot if she were to take one of her dance partners... she'll start turning that over in the back of her mind, more or less all the time — especially at her next dance class.
cam said:Not sure how she would feel about in under more normal conditions.
Commenting to your wife about her expanding her sexual horizons "in a normal way" under "more normal conditions" may cause her to begin thinking of it as a normal topic of conversation. A way to do it may be to say something suggestive to her before she leaves for work in the morning on her next dance class day (when you won't be able to accompany her because, unfortunately, you will once again have to "work late"). Something like, "When you feel X getting hard this evening, why don't you find an opportunity to reach down and squeeze his cock...? He'll appreciate you responding to him in that way, and won't be offended..."
Then, your wife won't be able to argue because she'll have to leave for work. But, she'll think about it as the day passes and, in the evening, at her dance class...