When your boyfriend gives you his letters where I go to school, they do get tied to a tree and stuff thrown at them. Then the rest of the chapter goes to find the girlfriend and serenades her, ect. Because all of the greeks are housed very near to each other it is like a greek activity. We all love to hear the singing and it is a good time for all. I can not believe that this would be considered hazing. It is not done without the boyfriend being fully aware and there are ways of getting around it.
I am sorry if you all think that I sound stupid, but it is fun and everyone really enjoys it.