Trivia Friday: Did you know that Rihanna's song "Unfaithful" was based on a relationship Rihanna had when she was 14 years old?

Rihanna's song "Unfaithful", is a slow ballad very different from Rihanna's earlier work, addresses the feelings of guilt a girl faces as she cheats on her boyfriend. She said in the interviews that not only do men cheat, women cheat also. "Unfaithful" is all about a girl cheating on her boyfriend which was based on Rihanna's relationship when she was 14 years old.

In an interview, Rihanna said about the lyrics, "I'm referred to as a murderer in that song. Meaning, I'm taking this guy's life by hurting him, cheating on him. He knows, and it makes him feel so bad." She continued, "We always put it out there that guys cheat, and finally someone put it in perspective: girls cheat too."

In another interview for NewsDay, she said that "Unfaithful" was birthed out of a relationship she outgrew when she was fourteen. She added that the nature of the relationship was not physical.

The song was written by Shaffer "Ne-Yo" Smith with the song's producers StarGate. The song was originally titled "Murderer" and is about a woman who regrets cheating on her partner. "Unfaithful" is a pop ballad that contains prominent R&B elements, and was inspired by the works of American rock band Evanescence.

"Unfaithful" received a mixed response from critics; many praised its powerful balladry, but some criticized the lyrics. However got positive responses from most music critics.

Kelefa Sanneh from The New York Times described "Unfaithful" as "a profoundly ludicrous – but not disagreeable – pop lament"

Quentin B. Huff from PopMatters commented that, "'Unfaithful' is a well-intentioned ballad informed by dramatic piano and strings"

Slant Magazine's Sal Cinquemani stated, "The melodramatic, string-laden ballad 'Unfaithful' is, if nothing else, an ambitious second single for an artist like Rihanna, and with lyrics like 'I don't want to be a murderer/Our love, his trust/I might as well take a gun and put it to his head,' it earns bonus points just for being so fucking weird"

Steve Jones of USA Today wrote that while the other ballads on the album were not as strong, "'Unfaithful', in which Rihanna deals with the "consequences of her own cheating heart, shows depth".

Celia San Miguel from Vibe magazine praised "Unfaithful", stating that it gives Rihanna a "new found charisma, solid vocal range and her ability to channel deep-rooted emotions with ease"

Dan Charnas from The Washington Post described the single as "an honest account of dishonesty".

Since its release, "Unfaithful" has been a staple of Rihanna's performances.