What would YOU do ?

Imagine the following situation:
You are on a school trip since one week. A few days ago there was a boy who said that he loves you, but you don´t know who he is and you notice that you don´t like his character.
Two days later all people from your class making a party downstairs, but you stay in your room, cause you feel ill. You turn the light off and go to bed, after you drank a bit valerian for better sleep. Then suddenly someone open the door a bit and looking into the room and than the door is closed again. This repeat two times more. A few minutes later, when you nearly sleep, the door opens again and somebody come into your room, but you don´t really notice it. This person comes near to your bed and than you can feel fingers which are pulling down your blanket and trying to touch you. Than you wake up and see this one boy, you really don´t like. The boy laugh and run away.
You are frightened and begin to cry.

What would YOU do the next day?
Would you tell it a teacher, do nothing, or go to the boy and beat him etc for that what he did?

I hope my English wasn´t so bad and you can understand the text. ;P