Can a 16 year old date a 19 year old in New Hampshire?

2 attorney answers The legal age on sexual consent in NH is 16. Appears you are OK legally, but this does not mean its a good idea.

Can a 20 year old guy date a 16 year old?

No, its not against the law for a 20 year old to DATE a 16 year old. The definition of date means to go out together to a movie or to dinner or dance. It does not mean having sex regular or oral.