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 okay for a 30 year old to date a 17 year old?

There is nothing illegal about such a relationship - as long as it is not sexual. In most US states, the age of consent is 18, and if sex is consummated (in some cases without the consent of the parents), then such an act would be considered statutory rape.

Can a 30 year old sleep with a 17 year old in Texas?

It is illegal for an adult (someone 18 or older) to have sex with a minor (someone younger than 17), even if the sex is consensual. Those who break the law have committed statutory rape (classified as sexual assault in Texas).