How do you start out in life as a teliophile and switch to children? I have never heard of that before...
I knew teen boys when I was a teen, who were very clear that they liked little girls. Without ever being involved with any pedophile group or being exposed to "pedo-lingo", they would make comments like "I really want a little girlfriend!" It came naturally to them. They were still kids themselves.
It was/is lifelong and unchanging, for all the pedos I've known. Reading you write that, is like hearing a gay man say "well, I was hetero and really liked women for the first half of my life, but now I'm gay".
How does THAT work??