 Between 2001 and 2004 , Carey 's popularity had substantially declined and many had considered her career over . The song spent fourteen non @-@ consecutive weeks at number one on both the US Billboard Hot 100 — after making its debut at number 81 — and on the Hot R & B / Hip @-@ Hop Songs chart . It had major cross @-@ over success , becoming the first song to simultaneously occupy the number one position on nine Billboard charts on the week ending August 6 , 2005 : the Hot 100 , Billboard Hot 100 Airplay , Hot R & B / Hip @-@ Hop Songs , Hot R & B / Hip @-@ Hop Airplay , Pop 100 Airplay , Top 40 Mainstream , Rhythmic Airplay Chart , Hot Dance Club Songs , and the Hot Ringtones charts . Spending fourteen weeks atop the Hot 100 , " We Belong Together " became the one of the second longest running number one songs in US chart history , behind only Carey 's 1995 collaboration with Boyz II Men , " One Sweet Day " , which spent sixteen weeks at number one . Aside from its chart success , the song broke several airplay records , and according to Mediabase and Nielsen BDS , gathered both the largest one @-@ day and one @-@ week audiences in BDS history , reaching 32 @.@ 8 million and 223 million impressions respectively . This record was held until it was broken by Robin Thicke 's " Blurred Lines " in 2013 , with 234 @.@ 65 million listeners on July 28 . 
