This week on “Whitney,” it was a bit of a mixed bag with “Space Invaders,” whose title was better than the actual show within the context of the plot. It revolved around the fact that Alex was lying to Whitney about his whereabouts in order to score a little ‘me’-time. Understandably, given how high maintenance she is. The guy’s simply trying to have a moment to himself, and he wanted to do it without ruffling her feathers. (Get it? “Space Invaders”?) Don’t get me wrong, it’s kind of sad that he has to lie for such a mundane reason that she should be okay with in the first place, but this is Whitney we’re talking about, once again.