Yes, relationships seem dangerous or at least irritating at times. And our choices often appear murky. Want a surprisingly quick and satisfying exercise for making wiser decisions next time? Try it by opening to any page in the witty new book by Dr. Mardy Grothe, I Never Metaphor I Didn’t Like. (Relationship Is Like a Shark is one of his chapter titles.) His previous gems are Never Let a Fool Kiss You or Let a Kiss Fool You, Oxymoronica and Viva la Repartee.