Originally Posted by Aladdin Sane

Get real ma man. Your biological impulse is to breed. The impulse isn't automatically switched off on females until they reach a certain age. You are wired to respond to female secondary sexual characteristics. When you see a female who is sexually mature--meaning breasts and hips have become pronounced-- you are wired to respond. It matters not if her chronological age is 8 or 18. Now, you have the ability to choose if you will act upon your biological impulse, and this is where social taboos come in. Even though the cherry is ripe, and you desire it, you are constrained by social mores (and the law) not to pick it.
In short, there is nothing abnormal about you getting horny over a young babe who is sexually mature. On the other hand, if you are horny over a young girl who still looks like a child, then you need to seek psychological help.