Writer and cartoonist Tim Kreider admits unabashedly that the longest relationship of his adult life was with the stray cat that became his companion for 19 years. His new collection of personal essays details his many unconventional relationships, which include the girlfriend he traveled with on a circus train, a married woman he fell in love with and his whirlwind romance with a sexual performance artist. "One of the few conclusions I may have reached from writing this book is that when we say 'relationship' or 'marriage' we all think we're talking about the same thing," Kreider says. "But I think there are a lot of different deals out there." And Maureen Corrigan reviews the debut memoir by Matt Young, a combat veteran of the Iraq War, titled 'Eat the Apple.'