Shawn Mendes and Fifth Harmony's Camila Cabello are reportedly an item! A source confirmed the couple's relationship status to E! News after the pair was spotted linking up backstage at this weekend's iHeartRadio Music Festival. Shawn, 17, and Camila, 18, have been friends for a while, getting to know each other when he toured with Austin Mahone and Fifth Harmony. This Summer, they both took the stage during Taylor Swift's 1989 tour, too; Shawn opened for the singer and Camila popped up when Fifth Harmony made a surprise appearance for Taylor's August show in Santa Clara, CA. Find out more about Shawn Mendes, and check out all the times he was too cute.