"As Long as You Love Me" is a song by American boy band Backstreet Boys, from the group's eponymous debut studio album in the United States, Backstreet Boys (1997), and their second studio album worldwide, Backstreet's Back (1997). The song was written by Max Martin, who produced it with Kristian Lundin, and lyrically describes the reciprocity of a relationship. "As Long as You Love Me" was released by Jive Records as the second single from both albums in the United Kingdom on September 29, 1997, and in the United States on October 7, 1997. The song received generally positive reviews from music critics, who praised the production.

"As Long as You Love Me" topped the charts in Lithuania, New Zealand, the Philippines and Romania, and peaked at number two in Australia and Austria, number three in Canada and the United Kingdom, number four in Switzerland and Sweden, and number five in the Netherlands and Norway. An accompanying music video was directed by British director Nigel Dick and depicts the Backstreet Boys performing an audition for six women.

In an interview with Billboard, AJ McLean noted that he was initially meant to sing the song's bridge, while Brian Littrell and Nick Carter would both sing the verses. However, he had been infected with strep throat, and was subsequently replaced with Littrell, whose vocals were featured on the album and single.^[1] The song was a last-minute addition to the album, as Clive Calder, then-chairman of Zomba, heard the song and called Jive Records president Barry Weiss, who then contacted the band's manager, Johnny Wright.^[2]

Stephen Thomas Erlewine from AllMusic stated that "As Long as You Love Me" "would have sounded perfect in any era".^[3] He also praised the song's slick production, which he described "as irresistible as teen pop can be".^[4] John Dingwall from Daily Record stated that the song reminded him of "the 90s New Kids On The Block".^[5] A reviewer from Music Week rated it four out of five, adding, "This bears many similarities to Boyzone's trademark mid-tempo ballad sound and will be another big step in the US fivesome's bid to match their Irish counterparts in the boy band big league."^[6] Chuck Arnold from People Magazine viewed it as their "sumptuous signature song", noting that it "is about leaving your life in the hands of that special someone — on just the one condition that they love you back. Sounds like a deal."^[7]

"As Long as You Love Me" was never released as a commercial single in the US but became an MTV staple and radio airplay hit. It spent 56 weeks on the US Billboard Hot 100 Airplay chart, peaking at #4.

The single has sold over 530,000 copies in the United Kingdom.^[8]

The Netherlands retro rock band The Kik recorded a live version in Dutch ("Als jij maar van mij houdt") in the 3FM studio, using only CASIO keyboards. Radio DJ Giel Beelen subsequently asked the band to release their version as a single.^[10]

In 2019, the duo La Folie and singer Jordi Ninus recorded a version in Catalan of this song, under the title "Si em dius que m’estimes" ("If you say you love me"), for the CD edited by La Marató de TV3, a telethon devoted to raise funds for the research of incurable diseases.^[11][12]

• UK 7-inch single^[13]

A. "As Long as You Love Me"

B. "Every Time I Close My Eyes"

• UK and European CD1^[14]

1. "As Long as You Love Me" (radio version) – 3:32
2. "Quit Playing Games (with My Heart)" (E-SMOOVE vocal mix) – 6:48
3. "Everybody (Backstreet's Back)" (Funked Up mix) – 7:13
4. "Every Time I Close My Eyes" – 3:55

• UK and European CD2^[15]

1. "As Long as You Love Me" (radio version) – 3:32
2. "As Long as You Love Me" (unplugged version) – 3:32
3. "As Long as You Love Me" (instrumental) – 3:30