The aim of this paper is to analyze how sex effects young girls sense of identity as well as to see which norms there is about sex in relation to girls, which power it has over how they are able to act and still be accepted by their peers and the society. The material that was used consisted of four books that are marketed as ”for young adults” and in which sex was a major component of the stories. The method that was used for studying the books was a qualitative text analysis and the theoretic framework consisted of queer theory, with a main focus on the unstability of gender/sex and sexuality, performativity, the heterosexual matrix and heteronormativity. The analysis showed that all books compared the girls to traditional norms about how girls are ”supposed” to act. All while they contradict themselves by showing sides of female sexuality which go against the former understanding of girls and girls sexuality. The female sexuality plays a big part in how girls are understood, how their identity is created. At the same time as sex allows them to create their identity it also creates them and controls them. Beacuse as soon as they don’t conform to the norms they are understood as ”odd” and ”wrong”.