Always be prepared. Withdrawal is better than no birth control at all. Only about half of high school students have ever had intercourse. Far fewer have it on a regular basis. Many kids who have had sex wish that they had waited.
Masturbation is a risk-free sexual activity because no body fluids are shared with a partner.
Some people are embarrassed to talk about it, but most people enjoy masturbation throughout their lives. People under 25 have more sexually transmitted infections than anyone else. People who have sex should get checkups at least once a year. When someone is forced to have sexual intercourse, it is rape. Rape is always a crime.