Going from study partners to sex partners

There was a real hatred between the two of them that there was no way to hide or show anymore. They had always hated each other because they both were each other's competition, always the best grades, always winning contests, always trying to be number one. They had grown up like that and had managed to stay far enough away from each other to avoid catastrophe, all until that day when they had to work together. Now in her room they were both trying to deny what their bodies demanded of them, for as soon as they entered the room they both felt that electric shock that demanded to be celebrated with kisses and caresses.