It turns out that in Louisiana (where Jamie Lynn Spears lives) a 19 yr old having sex with someone under 17 is guilty of statutory rape. There seems to be some conflict on how old the younger Spear's boyfriend is, but some accounts say he's 19.
By the way they allegedly met in church.
If I were Lynne Spears (the mom) I would throw the book at him (and not the one she wrote). Having JLS announce her pregnancy is going to costmom big time because who is going to want a book on parenting from a woman who has one daughter who loses her babies and another who gets knocked up while underage?