Is it illegal for a 21-year-old to date a 17-year-old? Absolutely. There is no law that prohibits you from going out with someone (like going to the cinema, to the park, etc.). But if youre really asking whether its legal for a 17-year-old to have sex with a 21-year-old, the answer is, it depends.

Can you date a 17 year old when your 21?

Yes, so long as the relationship is not sexual. If they have sexual intercourse, the 21-year-old can face criminal charges for statutory rape if they are not married. The penalties for statutory rape carry up to 3 years in jail. This law allows minors of similar ages to engage in consensual sexual activity.