Not yet. You're far too young. Trust me, you'll regret it. I remember when I was at school, a friend of mine had sex with her boyfriend of 9 months and straight after they had sex, he dumped her. You can do other stuff if you want to but shouldn't have sex. You may not think it's a big deal but for girls, the first time is huge and can really muck around with your emotions if you're not ready for it. There's plenty of time and if he loves you, he'll wait until you're a bit older and ready for it.