Does wife fantasizing about open marriage mean she has someone in mind

For years, on and off, when younger, my wife and I fantasized about swinging. It made for some pretty hot sex but, though we explored swinging, never did anything about. That fantasy pretty much ended once we had children and I figured that that door had closed. In the last year there were two events that make wonder.

The first was last summer. We were cleaning out some boxes under our bed and found some books on swinging and open marriages we bought back in the day. I asked her if she wanted me to place them in the garbage bag or recycle bin. Instead she placed them on a lower bookcase shelf in our bedroom. When I asked her if this meant she was interested in swinging again she said no, she just wants to put the books out as a "shock" in case someone snoops.

Recently, while having sex, we got into the fantasy pillow talk again and when I asked her what she wanted she said to go off somewhere with another guy in private. When I asked if she meant swinging where we both our separate ways, she said no, she wants to pick up another guy on her own. When I said open relationship she said yes. Keep in mind she had already had had an orgasm.

I asked her if she had anybody in mind and she said no. Thinking it was part of the fantasy I said she could date if she wants and when I asked if she wanted me to post an ad on the internet for her she said no, just wants to find someone the old fashioned way.

We've talked about it again a few times since as I tried to figure out if she was fantasizing or this was something she really wanted to explore. Her answers have been vague. I went onto another website where men chat about their wife fantasies (not the most unbiased group in this situation) and found a former swinger whose wife now dates. He told me that my wife bringing up the fantasy means she already does have someone in mind she wants to have sex with but doesn't want to go behind my back. She has recently lost a lot of weight and gotten in shape and is feeling good about herself.

Now I am really fine if she does want to go out and have sex. I know where her heart is and am not worried. What I really want to know is, before I start taking this further with her, is it normal for a wife fantasizing about an open relationship to mean she already has someone in mind she wants to have sex with and is just asking permission?