Have a good read around here and educate yourself first. Do a search, read the stickies, do a tag search. This site is not particularly for open marriages although a lot of couples start that way or with swinging. I would recommend finding out what you want and what you could deal with if she decides she wants the same things.
Remember that when you address this with her she will be starting at zero. You will need to be very patient and respect her process. It will be a rollercoast of ups and downs for sure. We are here to walk both of you through it if need be. It might be a good idea to suggest she read here also.
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