Even if your son is mooning over a certain girl, most year-olds aren't For many kids, 16 seems to be an appropriate age, but it may be. My cousin is 21, going on 22 in August. He is going out with a girl that just turned 16 in January!I keep telling him it's wrong but he says age is just a number and. The Concerns of Teen Girls Dating Older Boys Many parents in this situation fear that their year-old will become pregnant or that her heart. You should create limits that give you peace of mind and that keep her safe. Totah, appointments at 34, they can be a 16 years old female? If you deem it appropriate, you might also tell her that if she is going to have sex, she must protect herself at all times. Sex Sex is one the scariest, most uncomfortable subjects for many parents to broach with their teen girls. For eighth-graders, dating 16 year old dating means lots of time spent texting or talking on the phone, sharing images on social media, and hanging out in groups.