I don't see a problem as long as the text is kept between them.
And that is the problem, a good number of wives don't or can't keep stuff like that to themselves for a variety of reasons. Sure, some are okay about stuff like that but heaven forbid one of the blabbermouths gets a call like that and promptly posts it on Facebook, twitters it and calls every other wife she knows.
There was a reason that Milhouse from my first squadron didn't get to play in all the off-duty reindeer games with the other JOs, he told everything to his wife and she told everyone else on the Rock back home, usually embellished with a glint in her eye.
Don't be that guy.