Hey mate, I'm going to post anonymously. I'm in a similar position to you-
I'm 16, and I find myself occasionally attracted to 13 year old girls or something.
Although social norms and everything tell you it's not right, it's always helpful to put yourself in your shoes in a later date- if you were ten years older, it would barely be a problem at all.
I have known girls who I've spoken to, and I've been flirtatious with them or something, but then I find out they're 4 years younger than me or something, but I don't feel a whole load of guilt.
It's a hard battle. We're not psychopathic or paedophilic or anything. Just human beings. Everyone's different.