Early in our marriage we fantasized a LOT. We used toys to simulate MFMs and it really turned us on. While we were out I'd point out a good looking guy and ask "would you?" Several no's, maybe's, a few YES. I told her she could if she wanted to......she had a hall pass. Never took me up on the offer. One night we were simulating a MFM and I mentioned that I bet a real cock would feel better than this dildo. She took her mouth off of my cock and said "find me one"!!!!! I eventually mentioned my friend xxxx, and asked if she would. She whispered YES! BINGO! We eventually had several MFMs with him.......great sex! Since he lived out of state we didn't see him enough, so I offered her the opportunity to meet him half way at a beach for the weekend. She said she'd think about it. Unfortunately she eventually declined. So the only time she's been alone with another guy (our friend) is when I'd take a break in the action for a drink or a shower, and when I returned they were still going at it hot and heavy. Gawd I miss those days.
As I recall, she said she enjoyed being desired by others, but the sex didn't measure up to what she was used to with me. Her earlier sex with others was in college, and it was the only sex she knew. During our sex life together, I learned what she liked for foreplay, oral sex, and intercourse. Her one-time lovers didn't know any of that and didn't bring anything new to the bedroom.
This speaks a lot for familiarity. A lot of people would rather have one who knows what they like and is capable of pleasing them than testing the waters anymore. It's easier that way and they get just as much satisfaction from it. Older, you are exactly that way having never ventured out while staying with one woman. Plus with your spouse you have offered for her to go elsewhere if she wants. That's the key to the original question. Make the offer initially and if the spouse isn't wanting to let it be. The offer will still be in her head. She'll eventually let you know if she is interested or not. But it's her decision. If she ever becomes interested she'll make it known. If not the subject will probably never come up again.
This is basically the way it played out for me . When the time was right it happened and as far as I was concerned I was the winner . Since it was her idea when it happened we both got what we were after .
My wife felt much the same way. If she got good sex every time, her number of partners would be really high.
The way I find out anything from my girl is to ask her. If ypou both agree then go thru all of the possible friends and aquaintances. Then if no luck get on the net and pick someone from your favorite site but get together and have a cup of coffee and long conversation first. I suggest a local LGBTQ gathering and wear a name tag with a clue. "LOOKING FOR A THIRD PERSON TO JOIN US."
I think most women are willing to sleep with other men or women. Under the right conditions, anything can happen. My wife even said she wanted to have sex with other men, but was over a year making it happen. We talked to other couples, and it happened without expecting it.
My wife was cheating on me with my boss like 18 years ago. I was on denial, but I finally was able to connect the dots to realized that he was the guy. We have never approached the whole conversation about this. We were separated 4 years after that. In that period, I had several affairs, and a very special girl friend I almost get engaged with. I realize my wife likes a man because she changes some attitudes: she messes up her hair, she smiles more, sometimes she spreads her legs slightly wider that usual in a very normal situation, etc. We have a friend that I know she is attracted to and she can't hide it when we get together which is when he seldom visit us on his way to another city. He is a cook, and she follows him every step in the kitchen when he comes. We are visiting him for the first time this weekend. I hope I'll be able to see her making it up with him eventually.
It sounds great to me! I can tell it's so real because I want it to happen, and know it's possible. We have the guy (a very close friend) and we are going for it.