"On n'oublie jamais rien, on vit avec" (engl.: you'll never forget anything, you live with that) is a 2003 song recorded by French artist Hélène Ségara and Italian singer Laura Pausini. It was the third single from Ségara's third studio album, Humaine, on which it features as ninth track. Released in November 2003, the song was a success in France, Belgium and Switzerland, remaining to date one of the most successful single of both singers in terms of chartings.

When Humaine was recorded, Orlando wanted the album to contain a duet. He asked the Italian singer to participate in the vocal duet "On n'oublie jamais rien, on vit avec", and the two women met in 2003 for the recording. Italian lyrics of the song, "Per vivere il ricordo che ho di noi", were written by Laura Pausini.

Written and composed by Antoine Angelelli, Bruno Grimaldi and Gérard Capaldi, the song was the second multilingual duet for Ségara, after "Vivo per lei (je vis pour elle)" with Andrea Bocelli in 1996. As for this previous duet, the song mixes French (sung by Ségara) and Italian lyrics (sung by Pausini). This is a ballad pop which deals with love.

The song was also available on Ségara's best of just entitled Le Best of. It was included on many French compilations : Duos d'aujourd'hui, Girls 2004, NRJ Hit Music Only, NRJ Hit Music Only, Les Plus Belles Voix 3, released in 2004, and Vos Plus Belles Émotions (2005). It was also the third track on Ségara's 2004 CD single for "On ne dit pas".

Both singers performed the song in duet during the NRJ Music Awards in January 2004.

On April 13, 2012, Ségara joined Pausini as part of her Inedito World Tour and both sang the song.

"On n'oublie jamais rien, on vit avec" started at number 77 on 23 November 2003, on the French Singles Chart, a few days before it was officially released. It then jumped to number three and reached this position for three non consecutive weeks, but was unable to dislodge the number ones "L'Orange/Wot", "Shut Up" and "Si demain... (Turn Around)" which were successively atop. The song remained in the top ten for 15 weeks and then dropped slowly. It totaled 24 weeks in the top 50 and 30 weeks on the chart. Certified Gold disc, the song was the 17th best-selling single of 2004. As of August 2014, it is the 50th best-selling single of the 21st century in France, with 399,000 units sold.

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