How to tell someone you're dating that you're into incest?

@PDXNative1986 Are you speaking from experience?

@reinholddoppeldecker lol Thought precedes action...

@SomeMichGuy Thought also precedes inaction.
Have you never wanted to strangle a guy, or punch him in the jaw? Have you never wanted to take something that wasn't yours? What, are you some paragon of virtue who never thinks about doing something bad? Or are you actually writing from prison?

@reinholddoppeldecker No, I don't imagine strangling or punching people. Unsurprisingly, I have done neither...

I don't think about taking things which aren't mine.

I'm not a paragon of virtue, by any means.

But your reaction speaks volumes. You said you had an incest kink; I think that's true. It's different from an incest fantasy kink.

@SomeMichGuy In most cases, when people are talking about an incest kink, they mean fantasy. I didn't expect that this level of pedantry was expected of me. Yes, I am talking about sharing fantasies, not actually engaging in incest. I thought that this could be inferred from the question.
I even explicitly pointed that out just a few answers above. Why are you trying to paint me as a potential criminal?