It depends on your state and also on your definition of "date". No matter what state you're in, the law does not give a hoot who you hang out with at school or school events or the mall; who you go to the movies with; or whatever it is that kids do today. The law does care who you are having sexual contact with, and sexual contact is not limited to intercourse. How much they care and whether they care at all once you hit 17 is state specific. Your IP address says you're in California, and CA cares very much who you have sexual contact with until you reach 18.
So, assuming that you are in CA, the law is perfectly fine with anything non-sexual you do, but anything remotely sexual that you do, if you couldn't do it in front of your parents, could land your legally-adult boyfriend in a world of hurt.