Just to make things even more complicated, puberty brings another explosive ingredient into your life - sex! As well as making you change physically, sex hormones affect the way you feel, preparing you for sexual maturity. Most people start to experience sexual feelings and fantasies. These can be very strong and difficult to deal with.

It's common, and normal, to imagine kissing and having sex with other people. Most teenagers have 'crushes' on adults they fancy, and imagine having sex with them even when this is obviously out of the question. It's also common to have sexual fantasies about members of the same sex, as well as members of the opposite sex.