“Tug of War” was released on September 16, 2008, as the second single on its eponymous album. It peaked at No. 36 on the Canadian Hot 100.
Lyrically, “Tug of War” focuses on the insecurities felt in a relationship, as Jepsen worries about what her love interest may do without her. Jepsen described the lyrics as being “like journal entries, but to music”.