Question:  A Girl like Me is the second studio album by Barbadian singer Rihanna, who worked with Evan Rogers, Carl Sturken, StarGate, J. R. Rotem and label-mate Ne-Yo, who wrote the album's second single,  "Unfaithful" , written by who?
Context: Barbadian singer Rihanna has released four video albums and appeared in fifty-two music videos, six films, ten television programs, and eight television commercials.  In 2005, Rihanna signed a recording contract with Def Jam Recordings and released her debut single "Pon de Replay", taken from her first studio album "Music of the Sun" (2005).  Like its lyrical theme, the music video for the song was inspired by disco and dance; it was directed by Little X.  Three separate videos were released for "SOS", the lead single from her second studio album "A Girl Like Me" (2006), all of which contained various dance sequences.  The same year, American director Anthony Mandler directed the accompanying music video for the second single "Unfaithful", which featured Rihanna in a dangerous love triangle with her lover and her husband.  "Unfaithful" was Rihanna's first collaboration with Mandler; they later worked together regularly.  Also in 2006, Rihanna played herself in the third installment of the "Bring It On" film series, entitled "". "Shock Your Mama" (Atlantic 87363; Atlantic UK A7386; Atlantic Europe 87386; Atlantic Japan AMDY-5107) is the second single from the 1993 album "Body Mind Soul" (LP 82450) by American singer-songwriter-actress Deborah Gibson.  Co-written with Carl Sturken and Evan Rogers, as with "Losin' Myself," this single was co-produced with Carl Sturken and Evan Rogers.  The version used as the A-side is a radio edit of the LP Version, entitled the "London Apprentice Edit".  The song stalled at #74 on the U.K. singles chart. "Shut Up and Drive" is a song recorded by Barbadian singer Rihanna for her third studio album, "Good Girl Gone Bad" (2007).  It was written by Bernard Sumner, Peter Hook, Stephen Morris, Gillian Gilbert, Carl Sturken and Evan Rogers while the production was done by the last two.  Released as the album's second single, the song was solicited to the US radios on June 12, 2007 and was physically released on August 27, 2007, in the UK.  "Shut Up and Drive" is a new wave song which heavily incorporates the 1970s and 1980s musical styles.  Lyrically, it contains multiple references to cars and car parts including the 57' Cadillac. Barbadian singer Rihanna has recorded material for her eight studio albums and has collaborated with other artists for duets and featured songs on their respective albums and charity singles.  After signing a record contract with the Def Jam Recordings in February 2005, Rihanna began to work with producers Carl Sturken and Evan Rogers, who co-wrote and co-produced 12 out of the 15 songs on her 2005 debut album, "Music of the Sun".  Award-winning songwriter Diane Warren co-wrote the title track, while Grammy Award-winning singer-songwriter Deniece Williams co-wrote the song "Willing to Wait".  Sturken and Rogers co-wrote and co-produced 9 songs out of 16 on Rihanna's 2006 album "A Girl like Me".  The album's lead single "SOS" was written by Evan "Kidd" Bogart and J. R. Rotem.  It contains a sped-up sample of "Tainted Love", written in 1965 by Ed Cobb, who was credited as a co-writer on "SOS". "SOS" is a song by Barbadian singer Rihanna from her second studio album "A Girl like Me" (2006).  It was written by Jonathan "J.R." Rotem, E. Kidd Bogart and Ed Cobb, with production was handled by Rotem, Carl Sturken and Evan Rogers.  It was released on February 14, 2006, as the lead single from the album.  "SOS" is a dance-pop song which samples Soft Cell's 1981 recording of "Tainted Love", a song written by Cobb in 1965.  Critical reception of "SOS" was generally positive, with the majority of music critics praising the inclusion of the "Tainted Love" sample.  Some critics compared "SOS" to Rihanna's debut single, "Pon de Replay" ("Music of the Sun", 2005). "Pon de Replay" is the debut single recorded by Barbadian singer Rihanna, from her debut studio album "Music of the Sun" (2005).  It was written and produced by Vada Nobles, Alisha Brooks, Carl Sturken and Evan Rogers.  Her debut single, the song was released on May 24, 2005 as the lead single from the album.  Prior to signing a six album record deal with Def Jam Recordings, "Pon de Replay" was one of three songs which was recorded for her demo tape to be sent to record labels.  It is a dance-pop, dancehall and R&B song that features elements of pop and reggae.  The lyrics revolve around Rihanna asking a DJ to turn the volume of her favorite songs up louder.  The name means "play it again" in Bajan Creole, one of Barbados' two official languages. Love Games is the debut full-length album from Evan Rogers, singer-songwriter-producer and part of the duo of Carl Sturken and Evan Rogers.  In addition to Carl Sturken's contributions, John Nevin (who also would appear on Donny Osmond's 1989 comeback album) appears here on bass; he would resurface in 1991 as part of the Sturken/Rogers R&B/dance-rock band Rythm Syndicate. "Unfaithful" is a song by Barbadian singer Rihanna from her second studio album "A Girl like Me" (2006).  It was written by Shaffer "Ne-Yo" Smith with the song's producers StarGate.  The song was released by Def Jam Recordings on May 2, 2006, as the second single from the album.  "Unfaithful" is a pop and R&B ballad and was inspired by the works of American rock band Evanescence.  Originally titled "Murderer", the single speaks about a woman who regrets cheating on her partner. A Girl like Me is the second studio album by Barbadian singer Rihanna.  It was released on April 10, 2006 by Def Jam Recordings.  For the production of the album, Rihanna worked with Evan Rogers, Carl Sturken, StarGate, J. R. Rotem and label-mate Ne-Yo, who wrote the album's second single.  "A Girl like Me" is a pop, reggae and R&B album influenced by Rihanna's Caribbean roots.  The album also incorporates elements of dancehall and rock, as well as ballads, which music critics were ambivalent towards. Good Girl Gone Bad is the third studio album by Barbadian singer Rihanna.  It was released on May 31, 2007, by Def Jam Recordings and SRP Records.  Rihanna worked with various producers on the album, including Christopher "Tricky" Stewart, Terius "Dream" Nash, Neo da Matrix, Timbaland, Carl Sturken, Evan Rogers and StarGate.  Inspired by Brandy Norwood's fourth studio album "Afrodisiac" (2004), "Good Girl Gone Bad" is a pop, dance-pop and R&B album with 1980s music influences.  Described as a turning point in Rihanna's career, it represents a departure from the Caribbean sound of her previous releases, "Music of the Sun" (2005) and "A Girl like Me" (2006).  Apart from the sound, she also endorsed a new image for the release going from an innocent girl to an edgier and more sexual look.
Answer: Shaffer "Ne-Yo" Smith