I want to ask this guy to sadie?

i always bake and everyone knows me as like a baker and yah like all my friends get me bakeing gifts....so i was going to make a cupcake that said sadie? and give it to him?but the thing is i realy dont want to give it to him at lunch or my algebra cl wich is the only time i see him....and he thinks i liked his best friend (i didnt and i told him that it was my friend who like his friend)any way i just need an idea of when and where and how to give it to him?