How do I tell my wife I'm bicurious?

I've been with my wife for over ten years, married for nearly 7. Even before she and I got together I had a desire to be with men, but I love women too much to switch to the other side. I don't want to hurt her or make her feel like she's not enough, but these urges come up every so often. Help.
How do I tell my wife I'm bicurious?
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