Yes. I am 14 and when I was thirteen, I had a large sex drive too. I guess it's just growing up. I felt really horny all the time and my internet browsing history was deleted daily. I masturbated nearly every day. Let it out. It's perfectly normal to masturbate and stuff and watch porn...people may say it's wrong but it's better than going out and fucking a bunch of guys...and getting prego. It's perfectly normal and you'll probably get bored with it after a while, so don't worry.
