, a publicist who hates Valentine's Day, hosts an "I Hate Valentine's Day" party, while a sports reporter, Kelvin (Jamie Foxx) , is assigned to cover the holiday's fluff stories against his will.
discovers that the man she is dating, Harrison (Patrick Dempsey) , is actually married.
An elderly couple, , face a long-hidden secret that threatens their decades-long marriage.
, a temp worker at a talent agency, tries to hide her side job as a phone sex operator from her new boyfriend, Jason (Topher Grace) .
, a soldier on leave, shares a long flight and a deep connection with a stranger named Holden (Bradley Cooper) .
, a florist who proposes to his girlfriend Morley (Jessica Alba) , only to realize he may actually have feelings for his best friend, Julia (Jennifer Garner) .
The film features a massive ensemble cast including Ashton Kutcher, Julia Roberts, Jamie Foxx, Anne Hathaway, and Taylor Swift. The main plotlines include: