How do you become friends with an older boy?

find out things that you both have in commmon and go from there talk about school, hobbies also find out where he hangs out and just 'happen' to turn up there and if he asks say you just decided to try out a new place be careful how you go across doing this because you could also come across as a bit stalkerish you could also if you know any of his friends or people who know him get his number and text him that's a lot less embarrasing and if he asks just say ure friends gave it to you and you didnt know who it was.