Is it normal that my brother didn't get into sex until he was 15
My younger brother is just starting to get into sex now. He's talking about it a lot and just a couple of minutes ago my mom walked in on him watching american pie. Before he thought sex was gross and didn't know too much about it. Now he says he wants to get laid by senior year. Is this normal that he got into sex this late? I remember I got into sex when I was 12.