[strongandhandsome1]

I'm 31, my wife is 29. We have frequent sex, at least 4-5 times per week. During sex, we often describe a fantasy we are imagining at the moment. She has described another woman... another man... or another couple sharing in an orgy. This has totally turned me on and found that i am arroused by the idea. When i suggested we try it, she imediately scoafed at the idea... citing the end of our marriage if such a thing happened. She fears the images of her being with another man or sharing another during sex would haunt her.
We are both in really good shape now and wonder how much longer we have to explore such a thing before we both get fat and old. What do I do?

I think you should listen to your wife tbh. Having a fantasy and reality are two different things and many people have fantasies that they wouldn't actually want to act on.

If you push it, you may just make your wife hostile or worried, or both. She's told you how she feels..

[Harley47]

Riotgrrrl is correct. Fantasies, while perfectly normal and completely okay to have, shouldn't always make the jump to reality. If she's not okay with it, that should essentially be the bottom line in the matter, as it takes both you and her to be okay with this, and pushing the matter isn't going to help things. This isn't worth potentially losing her over.