You people are just talking canally biblicaly it's ungodly, unholy and does not glorified God. lets pick it from this angle, asuming 2 lover living together in thier own ignorant and they have do and undo, and at the end of every thing that lady now your future wife ordain by God Himself. What will you do? So living 2geda when not yet married is a TABOO bcos the sister or the brother might not met him or her. so who ever fall victim should think twice.