The lyric "How Long" most prominently refers to Charlie Puth's song "How Long." The song lyrics talk about a relationship issue, confessing mistakes and questioning how long the cheating or shady behavior has been happening. The key lyric repeated is "How long has this been goin' on? You've been creepin' 'round on me while you're callin' me baby." Other songs titled "How Long" exist, such as Paul Carrack's version, but Charlie Puth's is the most commonly searched lyric. If the request is about the full lyric of this song, it is fairly long, consisting of multiple verses, pre-choruses, choruses, and repeated lines, amounting to about 3 to 4 minutes of song length. Would you like the complete lyrics for Charlie Puth's "How Long"? Or are you interested in lyrics of a different "How Long" song? If the question "how long lyric" means the length or duration of the song or the lyrics text length, Charlie Puth's "How Long" runs about 3 minutes 17 seconds.