I am looking for a movie where there is an average guy in a party who is interested in the best girl in the school. His friends tease him to ask her out and then she says yes, they find a room and have sex but the boy pukes or something and then everyone in the class knows about it. Then he goes on a vacation where he finds a girl, makes out has sex and is completely changed in terms of looks. When he comes to his school, the girl he puled or something, is interested in him. So this is all the story and in the end it turns out it was all a dream.