http://www.psychologytoday.com/articles/pto-2139.html
What encourages teens to have sex anyway ?

4 of some the reasons are 'environment, friends that encourage them to do it, age of partner and perceived family support may affect young people's decisions to have sex.' Its been found that 4,201 girls in 8th through 12th grades that have had intercourse, those who lost their virginity between ages 11 and 12 tended to have partners five or more years older. For girls who had sex later in adolescence, the partner's age disparity was much smaller. I believe that when a younger girl gets involved with an older guy, the guy will try to take advantage of the girl and tell her everything she wants to hear so he can get what he wants.

Im not saying having sex is deadly and you shouldnt do it, but remember that with all these STDS and HIV flowing around the world one unprotected night with your mate, can be your last if you two dont be safe and use condoms. Statistics have said that Nineteen million new STD infections occur each year, almost half of them among young people ages 15 to 24. 10,000 teens are infected by STDs per day, one every eight seconds!