Here is a really interesting article on teen sex and contraception in the UK, which has the highest rate of teen pregnancy in western Europe.
'The results from our study clearly show that young people's ability to communicate is central to their use of a modern method. Young men who report feelings of love, fondness and intimacy as reasons for having sex the first time, and who thus do not fit stereotypes of masculinity, have significantly elevated odds of using a method at their sexual debut. Similarly, young women who say that they expected to have sex the first time, who appear to have taken control in discussing contraception and who feel comfortable (and presumably sufficiently empowered) in the company of young men, also have elevated odds of using a method at their sexual debut.
Our study also reveals the importance of parents in equipping their children with the skills to communicate and interact effectively with future sexual partners. Parents' willingness and ability to discuss sexuality openly and portray it in a positive light throughout their children's lives appear to impart both competence and confidence. In contrast, reluctance to talk about sexual matters and embarrassment in doing so reinforce negative messages of unacceptability and prohibition.
We also found that parents' openness and warmth and availability during their children's primary school years and early teenage years is key to young people's future contraceptive behavior. This finding is particularly pertinent for young men living in especially deprived neighborhoods, who appear to be less skilled and less willing than their more affluent counterparts to communicate with a first sexual partner. For these young men, engaging in this type of dialogue may threaten and challenge the gender stereotypes that their social environment reinforces.
In light of these findings, efforts to increase young people's competence to insist on contraceptive use, and thus reduce unintended pregnancies and sexually transmitted infections, should be multifaceted. Our different results by gender suggest that efforts need to be directed to challenging gender stereotypes and assumptions through gender-sensitizing activities and skills-based training in communication among young men as well as young women. Adults should also endeavor to provide a supportive climate where talking about sexual issues is acceptable, and where both parents and children feel comfortable talking openly about sex.
In the United Kingdom, as in many other countries, gatekeepers in the home, schools and elsewhere often are reluctant to acknowledge teenage sexuality and to foster a more open environment for discussing related issues. Indeed, as the British government increases its efforts to introduce more effective school-based relationship education, to encourage parents to discuss issues more with their children and to develop more youth-friendly services, a backlash has opposed these developments. For example, abstinence proponents have challenged government policies, arguing that more openness leads to earlier sexual experimentation. Our results will inform this debate by presenting evidence rather than rhetoric and by pointing to future policy directions.'
What this report suggests is necessary is a completely different culture wrt sex.