There arent any laws around being in a non-sexual relationship where one person is under 18 and the other over. Once you turn 16 its not illegal for someone to have sex with you no matter how old they are.

Is dating ok for a 16 year old?

Theres no right answer. Its important to consider your child as an individual. For many kids, 16 seems to be an appropriate age, but it may be entirely suitable for a mature 15-year-old to go on a date, or to make your immature 16-year-old wait a year or two. You can also consider what other parents are doing.

Can 16 year old date a 14 year old?

In general, it is not illegal in most states to date a 14 year old. Problems arise when the relationship turns sexual. Then there could be very serious criminal issues

Is it illegal for a 13 to date 16?

The question as phrased, the answer is no. It is not legal. If the 16 year old engages in any sexual conduct with the 13 year old, they could face statutory rape charges and the parental consent assuming there was any would have no bearing