Hello.
Same boat here-- I saw Pinnochio when I was a little kid, and was turned on by the donkey transformation. My mom caught me masturbating and asked me what made me feel like this, probably because she wanted to know whether I liked boys or girls. When I told her I liked people turning into donkeys, she was confused and asked if there was anything else, so I lied and told her Peter Pan because I immediately knew something was wrong with me but I didn't know what. Not long after that, my Pinnochio and Peter Pan books went missing and she told me that I was the only person who felt this way, that I should keep it to myself. Trouble was, she wasn't specific-- I didn't know what masturbation was, and I thought THAT was wrong... it wasn't until later that I connected the pieces.
I spent a lot of time on the Internet, and was around TSA when it was still active. I was on CYOC (Choose Your Own Change) from the time it was about 2 years old. I watched Transfur be born, and watched Ebalm's World troll the $#%^ out of some of my favorite websites. I've been closeted about it, but I'm trying to stop that now.
I don't turned on by normal porn. I like sex but have only ever orgasmed twice over the course of 15 or so partners in five years. I recently started seeing a m-f trans woman and-- even though I'm straight-- I am very into the fact that she is slowly growing breasts, that her body is actually transforming. She is helping me understand what I like and seems to understand the shame of being not-quite-normal.
I probably won't respond on here, but if anyone needs to talk, my Fetlife is hottentot_tea. Feel free to reach out!