I'm 12 and I'm going to high school this year and I really like a friends brother who is 15 yo. We're good friends I mean we take photos with each other, but I really like him and I think he just thinks of me as his little buddie , not that I don't like being his little buddie but I really have feelings for him, how can I make him go out with me

You're too young for this stuff, he is 3 years older and its weird during high school that age gap :/ sorry