Should i be his girlfriend?

I think you should stay friends for now, and i know it is hard but you need to nip this in the bud you need to let him know your not sure and you like him as a friend and tell him not to keep badgering you, If he really respects you he will back off. I think the fact you had to ask for advice in the first place shows you feelings are mixed and your not sure! Don't rush into anything you have your whole life ahead of you both. Good luck to you both. x