To my own surprise, I'll go out on a limb and disagree with the others.

I am reading a lot of defense of your wife in these responses. That strikes me as premature, because your few words tell us next to nothing about what she really feels. I am hearing others project their insecurities onto your wife. But some folks, both men and women, are open to multiple partners. Who knows; perhaps your wife is one.

I think it is second-guessing her to assume that she has been hurt by your suggestion. I'd prefer to assume that that she will tell you where to stuff it if she doesn't like the idea.

BUT, having said all that, I think so-called "polyamory" is a lot like putting your life savings on a poker game. The results could be fabulous. Or the whole thing could blow up in your face, leaving you with nothing.

If your wife is really and truly into it, and if your relationship is strong, you might be able to pull it off. But if you are having to prod or nudge or cajole her (or worse, coerce or manipulate), that's bad.

Good luck with whichever path you choose together.