Liking a character who is younger than you doesn't make you a pedo. One is a character. Where you're looking at them from a completely different angle to a real person. Often they're animated, or text only, so 'attractiveness' doesn't really come into it in the same way. Often they act WAY older than real kids would, because of a fantasy plot. Etc. Part of fiction is to have you be sympathetic/interested in the character.
I then look at *real* 16 year old boys and I'm like 'omg ewww NO!!!' if one of them mistakenly hits on me. But, something weird is I can look at kids, and go '... when I was younger, I'd find that guy really attractive'. but... he's not *actually* attractive.