I guess there is not much left to be said except good luck.
Also, after my last reply, it did occur to me that you and your gf/wife could take X with a couple that is not on X if the other couple is cool with it and you are comfortable with them. No one ever said everyone had to be on X. Just another thought.
Good luck with it.. Hope it works out and hope you will report the results of your "experiment" if you go through with it.