The tabloids are excitedly reporting that Rob and Kristen are "Engaged!" based solely on them calling each other "husband" and "wife" on set. So it seems only appropriate to hit them with a newlywed game of sorts. ... Who spends more time on their hair? Kristen: "Rob." Rob: "I have weird personal-space issues, and so I can't stand people -- um, I'll do anything to not have any touch-ups." C…