My friend "suspecting" about me

A few minutes ago one of my best friends came to visit me. We ended up talking about life and relationships and I said something like "I'll be single for my entire life". She then asked me why did I say that, and told me that I'll get to a point in my life when I will feel the need to have physical contact with someone but not necessarily and only physical but emotional as well. I really felt embarrassed and kept laughing in a nervous way all the time, you know, the way you'd laugh when you are in an awkward situation and have no clue what to say or do. So she asked me whats wrong why I was laughing and she said that she perceives something hidden in me. We've been best friends for 9 years now, of course she knows me well. I just kept saying that I just dont feel the need to be with someone and that things like relationship and sex dont really bother me, as if they were useless to me. I realized I shouldnt have been so explicit though.
Since she knows about teen girls I like she laughed and said "yeah I understand why, it's because you like younger girls....". I was rather shocked and tried to say something like "not really, what are you talking about!". Well, she doesnt know "how young I can go", like how young I like them. But she knows I like 12 year olds too and not only 14-15 years old (although she doesnt know I might like girls younger than 12.
What amazes me is that she laughs about it as if it were something normal and even funny.

I wont openly talk to her about my pedophilia and all the feelings and inner struggles that come with it. But if one day I'll feel very bad and in need to desperately tell someone, it would surely be her. She seems very open about it, but maybe because she doesnt know all?

What do you think about this situation?

Maybe it's because she knows you so well. She knows you're not a bad person, etc. If I was an every day, non-paraphilic person, and a stranger told me they were a pedophile, then I'd wonder if they ever acted on it, I'd feel uneasy, and I'd probably assume all sorts of things about this person. It would be an awkward situation, and they'd probably get the vibe that I was freaked out. But if my best friend told me, then I wouldn't have to assume all those things, cause I'd already know that that person was still the same one that I've loved and been so close with for so long. If that makes sense.

She already knows the real you, and probably accepts you and loves you no matter what, whether you're a pedophile or not,