If you’re scratching your head over Ne-Yo ’s polyamorous setup, relax ... 'cause he’s breaking it all the way down and giving a no-nonsense explanation of how the whole thing actually works. Ne-Yo laid it out on "Sherri" ... saying he never wanted to lie to another woman again after his nasty, public divorce ... and it's that mindset that led to a convo with his longest-standing GF of the three about possibly expanding the relationship, instead of sneaking around. Ne-Yo said he gave her the