If by date you mean just be around each other, then no! I live in Indiana and it's not illegal ANYWHERE to date someone. If you mean have sex at that age, it's not illegal either. In Indiana (and most states) the legal age of consent is 14. if you are any younger, and you have sex (even if the person you have sex with is under 14, too) it can be considered statuatory rape. even if you and your partner both agreed to it. the parents can file for rape charges.
No
It is not illegal for anyone to date.
Yes
There are no laws about dating. However, there are laws about sexual activity. The age of consent in Indiana is 17, so there could be problems if they do more than hold hands.
nope, but i wouldn't really recommend it.
it isn't illegal to date, but it is illegal to have sexual intercourse.
Yes.
As long as nothing sexual occurs, it is legal.
No.
Yes it's legal
Dating is not illegal; sex is illegal.
No, it is only illegal when you are over 18, its not illegal to date anyone younger or either older than you