Can you fall for someone you just met?

Can you fall for someone you just met? I thought when people fell inlove at first site it was shallow. I thought that they only cared about how the person looked and not what counts but that is totally wrong.
When I first moved to Shelton, I didn't know anyone. And I fell for one of the first people I met when starting SHS. I have learned to care for him and he has come to mean so much to me. I really do love him and it hurts so bad because he just wants to be friends. I know that's good because he is looking out for me. He doesn't want to see me get hurt but he can't see by protecting me, he is hurting me because I do care about him. I told a friend of mine this and it's true, " I do love him. I would do anything for him if I thought it would make him happy." And it's true I want him to be happy but I also want him to love me as more then a friend. I want him to need me like I need him.
I am growing close to him and it scares me. I swore after what Nash did to me that I wouldn't let a guy this close. But, Kyle worked his way into my heart and now I won't let him go. But, I need to know where this is going. I won't allow myself to make that mistake again. I need to know his intentions are true...Hell, I need to know what his intentions are!
Is it a good thing that when I see him my hearts beats faster? Is it a good thing that when he looks at me with that smile that he gets my knees get weak and I feel faint? I really do think I love him...But, how do you know for sure?