(photos NYPost)

9 year old Alec Greven is giving dating advice and dating tips in a book he wrote.

He started to sell his book ”How to Talk to Girls” at his school for 3 dollars.

And now all the country talks about him.

Alec give tips on how to spot pretty girls. ”Pretty girls are like cars that need a lot of oil” he said.

His 46-page book is now a big hit.

The kid wants to be a full time writer. He also just wrote a book on the Watergate scandal.

You can find his book on Amazon.com.