Jason Derulo - 'Want To Want Me' (4 Weeks).
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Every Big Top 40 No.1 Single Of 2015
19. Jason Derulo - 'Want To Want Me' (4 Weeks).
Jason Derulo scored the No.1 just HOURS after the song was released knocking Omi off the top. It continued to dominate for an entire month before finally losing its place in pole position.