Dear John is a 2010 American romantic drama-war film starring Channing Tatum and Amanda Seyfried. It follows the life of a soldier (Channing Tatum) after he falls in love with a young woman (Amanda Seyfried).

In 2001，John Tyree (Channing Tatum), a Sergeant in the Army Special Forces, is on leave back to the army when he meets Savannah Lynn Curtis (Amanda Seyfried), a college student on spring break. Over the course of two weeks, Savannah and John fall in love. John meets Savannah's family, her neighbor, Tim Wheddon, and Tim's son, Alan who has autism.

Savannah meets John's father, a reclusive man who is only interested in coins. John tells Savannah his father's obsession with coins interfered with their relationship, and they are not close. Even though John planned on leaving the army, the September 11 attacks conflict him, and he ultimately chooses to re-enlist.

Over the next two years, John and Savannah correspond through letters. Ultimately, Savannah sends John a Dear John letter, informing him that she has become engaged to someone else. John, deeply depressed by the news, burns her letters...