The first time I saw a preview for the new movie “Dear John,” I wondered why they would name a supposed love story the term used for break-up letters. All throughout the preview, the main female character, Savannah (Amanda Seyfried), writes letters to her army boyfriend John (Channing Tatum), all beginning “Dear John.” As could be expected, the title—and the use of this line—foreshadow a major plot point.

The central question behind “Jennifer’s Body” is one that is raised in the back of every high school football bus after every away game. “Would you still do Megan Fox if you knew she was going to kill you afterwards?”