Can a 16 yr old date a 26 yr old?

This means that its against the law for someone to have sex with someone under the age of 16. It wouldnt be illegal for someone whos 16 to have a relationship with someone who is 30 - unless that person is their teacher or in a position of authority. - feel equal, safe and trust one another.

Is it wrong for a 15 year old to date a 26 year old?

It is illegal and the 26 year old can be charged with some serious felonies, including statutory rape, etc. He could go to prison and, be required to register as a sex offender for a minimum of 30 years.