They shouldn't. Teenagers are already growing up way too fast. They think they're being so mature, acting all grown up and dating ect. But they're still children, and primary school children are even younger. Kids don't get proper childhoods any more.
None that I can think of ! You're way to young to understand the male/female relationships. Do your schoolwork and get your education first and worry about boyfriends when you're much older. It'll work out better in the long run.