Can I just say, I know everyone else is saying the exact same thing, but they aren't really being calm about it [Sorry if you are being calm, I only read the first three answers] so first of all, you're a bit too young to be thinking like that. You're too young to know that you want to have sex with him and you're also too young to know who you love, I know you can fall in love at any age, but sometimes when you're young you don't exactly realise when you do fall in love or not.
So please just think it over, but in one of your earlier questions you mentioned that you've known him a year? That isn't ages, I'm sorry, that's only a year. A year compared to thirteen years. Not very long. But if you think you are in love with him, do what you should do, ask advice from a trusted adult, they could help a lot.
Not from people like me, I am the exact same age as you and I've been told many of times to not think I'm in love with someone when I'm not. Nobody really knows they're in love with someone until they have actually met the person and see them daily.
So think it over please.