Boy is surprised to discover trans girl

He could not believe his luck, he had managed to take to his room the most beautiful girl of the party, she was a perfect girl in so many ways, it had cost him some work to convince her to accompany him, the girl did not stop claiming something of the secret to hide and he could only try to comfort her by telling her that no secret matter, he just wanted to have a good time by her side. When they were in the room and after kisses and innocent caresses they began to undress, he quickly and she still with fear. Then he understood the girl's reluctance, for when she undressed her skirt, she revealed a large, hard member.