In Mississippi, the legal age for persons having sex is 16 but this age may be is different in another state. Another way to think about this is that before beginning a sexual relationship, ask how this might affect your life. For instance, if your parents know you are sexually active, will they be supportive or will that cause them to be disappointed. If there is a pregnancy, will you be able to support that child? How will having a baby impact your life? What would happen if you got a sexually transmitted infection, like HIV?
Deciding when someone is old enough to have sex really takes thinking about why you want to have sex and how that decision might change your life.