Is it okay for a 13 year old girl perform sex w a 13 year old boyWITH the parents permission?

Answer 1

Even if they give their permission you are still underage. They can actually go to jail for it. Stick to masturbation at 13!

You don't have to wait until you are married but you should wait until you are mature enough to handle the responsibilties of what can happen and one thing that can happen is that 9 months later a child could be calling you "dada". I'm not all that sure that any 13 year old can handle that responsibility, with or without a parents permission.

Answer 2

It is physically possible.

But in most countries it would be illegal