I need to tell him! PLEASE HELP 10 PTS!?

Seems like he does like you but correct me if im wrong but he's probably just trying to be a good friend and maybe the pissed off part wasnt because of the other friend situation. If you want on the last day of school [so you wont see him in the following days of school or your desicion] you can turn around and tell him you need help [for attention]then say " um you know what nevermind but i need to tell you something" then say your feelings toward him because if you do it in a note or send a friend it will just mean that you have no Bravery in yourself :)