"Boyfriend" is a song written and recorded by Canadian musical duo Tegan and Sara for their eighth studio album, Love You to Death (2016).

In the duo's native Canada, the song entered the Billboard Canadian Hot 100 at number 92 and has impacted multiple national airplay charts.

"[10][12] Lyrically, the song tackles the subject of defining a relationship, with the chorus listing contradictory behaviour that makes the narrator feel sometimes like a lover and other times like a friend.

[14] In an advance review of the album, Christopher Bohlsen of Renowned for Sound cited "Boyfriend" as a "great example of the sheer quality of the sisters' writing" for their ability to "cut right to the emotional heart of the concept."

[15] Billboard ranked "Boyfriend" at number 87 on their "Billboard's 100 Best Pop Songs of 2016: Critics' Picks" list, writing "Today in pop singles that should have been massive hits: After working with Greg Kurstin for portions of 2013's Heartthrob, Tegan and Sara Quin team with the producer for 10 shimmering synth-pop gems, including this infectious tale of being in a relationship that's everything but public, topped off by a towering chorus.

[18] Tegan and Sara performed "Boyfriend" live on The Tonight Show Starring Jimmy Fallon during the May 10, 2016 episode on which they served as a musical guest.