hi i'm 15 and i'm reli good friends with this girl who lives near me but now i think i'm in love with her what do i do
I'm guessing you're asking this because you're nervous to tell her how you feel about her. Being a teenager and having feelings for someone is always a nerve-wracking situation!
I suggest if you want something to happen with this girl, you summon the courage to tell her how you feel. Tell her in a way that makes you feel the most comfortable. If she feels the same way, any way of telling her will get her excited. Also make it clear that if she doesn't feel the same way, that you still want to be friends and don't want your feelings to get in the way of the friendship you two have.
I suggest if you want something to happen with this girl, you summon the courage to tell her how you feel. Tell her in a way that makes you feel the most comfortable. If she feels the same way, any way of telling her will get her excited. Also make it clear that if she doesn't feel the same way, that you still want to be friends and don't want your feelings to get in the way of the friendship you two have.