You don't know that it's a "wanna be"-- you just *think* it is.
That one event (forgetting your manners and running to your Mum) does not determine the whole friendship. If you like him, you should talk to him-- or else you'll be stuck pining for him, and that will just make you very sad.
So go talk to him. There are great opportunities for a conversation, seeing as that you and he share so many interests.
Don't always be there, because that's going to be very annoying. Guys like things and people that are not easy to get. Be friendly, but don't always be available. When you spend time with him, just be casual and natural-- do not pretend to be something that you are not.
Don't expect anything, though, since he's quite the flirt. But love yourself enough: Make yourself truly the best you can be-- in school, in manners, in attitude, in looks. Do not frustrate yourself over this. Instead, enjoy every moment of polishing yourself. In the longrun, this will give you lasting benefits that you can carry to your professional life and in advanced age.
Try not to be antisocial, because being antisocial confers weakness. An antisocial person always finds herself alone, because when people even try to make friends with an antisocial, they know at the back of their minds that they're the only friend that the antisocial has.
If you are strong and independent and really like yourself, it will follow that people will like you. Do not make just one friend (or you will obsess about that friend). Be friendly with everyone, but *PICK WISELY* with regards to the people to whom you'll give your trust.
It may even make him see that you're not one of those swooning girls that are easy and drop like flies every time he looks in their direction. Believe that you are the kind that becomes important and indispensable through time, because you respect yourself, and you love life.