Goodbye, Casanova (2000)

A aspiring novelist operates a tiny neighborhood bookstore. His wife is a talented painter. Their marriage is disintegrating, and they are about to sign their divorce papers. Meanwhile, the legendary Casanova and his lover Lavinia are characters trapped inside of a 17th-century children's book. The tragedy of the impending divorce triggers the release of Casanova and Lavinia from the confines of the children's pop-up book.