My son lives in Mississippi. Can my 18 year old son be charged with statutory rape in Mississippi if he was 17 at the time and she was 15 at the time

Question Details: The girl was his girlfriend at the time and she is 15 and he was 17. He is now 18 and she is pregnant. Her parents and her are toying with the idea of statutory rape charges. But they want do it if he want have anything to do with the baby. Isn't that really a form or blackmail in itself. Important Notice