In 4th grade I had a "GF" and we used to write each other page long notes and exchange them in class. Well one day the teacher caught me as I went to hand the girl the note, and since she had already asked me not to do that once, decided to read the entire thing out loud to the class. Both of our faces were beat red. At that point in time I wanted to be anywhere but there.
Pretty sure these days a parent would sue for ego damage or something.
It definitely worked, never passed notes in that class again.