When we think about the most memorable couples in literature, most of us would probably name the pairs immortalized for their great romances--Mr. Darcy and Elizabeth, Romeo and Juliet, Cathy and Heathcliff. But seriously, haven't they gotten enough attention? In our opinion, the more compelling (and realistic) literary relationships are the ones marked by conflict, violence, chaos, and, sometimes, irresistibly dark humor. Below, our favorite classic literary couples who perhaps should never have been coupled at all. Click through our picks below and add your own comments.