 After the song 's release in the United States , " Loverboy " stalled on the Billboard Hot 100 . The song reached a peak of number two on the Hot 100 but failed to top the chart due to weak radio airplay . Though finishing as the best @-@ selling song of 2001 in the United States , " Loverboy " became Carey 's first lead single to not reach number one . <unk> , the song failed to garner strong charting , reaching the top @-@ ten in Australia and Canada , and the top @-@ twenty in Italy and the United Kingdom . 
