programming, keyboards Ali Tamposi – lyrics, composition Jack Patterson – composition Charli XCX – composition Paul LaMalfa – engineering, vocal engineering John Hanes – mixing engineering Serban Ghenea – mixing Nathaniel Alford – vocal engineering Zubin Thakkar – vocal engineering Pedro Sisco - songwriting, lyrics Charts Weekly charts Monthly charts Year-end charts Certifications Release history See also List of airplay number-one hits of the 2010s (Argentina) List of Billboard Argentina Hot 100 top-ten singles in 2019 List of Billboard Hot 100 number-one singles of 2019 List of Canadian Hot 100 number-one singles of 2019 List of most-streamed songs on Spotify List of number-one singles of 2019 (Australia) List of number-one hits of 2019 (Austria) List of number-one singles of 2019 (Belgium) List of number-one hits of 2019 (Denmark) List of number-one singles of 2019 (Finland) List of number-one hits of 2019 (Germany) List of number-one singles of the 2010s (Hungary) List of number-one singles of 2019 (Ireland) List of number-one hits of 2019 (Italy) List of number-one songs of 2019 (Malaysia) List of number-one singles of 2019 (Netherlands) List of number-one singles from the 2010s (New Zealand) List of number-one songs in Norway List of number-one singles of 2019 (Poland) List of number-one singles of 2019 (Portugal) List of number-one songs of the 2010s (Romania) List of number-one songs of 2019 (Singapore) List of number-one singles of 2019 (Spain) List of number-one singles of the 2010s (Sweden) List of number-one hits of 2019 (Switzerland) List of UK Singles Chart number ones of the 2010s References External links 2019 singles 2019 songs Camila Cabello songs Shawn Mendes songs Billboard Hot 100 number-one singles Canadian Hot 100 number-one singles Irish Singles Chart number-one singles Island Records singles Male–female vocal duets Number-one singles in Australia Number-one singles in Austria Number-one singles in Denmark Number-one singles in the Commonwealth of Independent States Number-one singles in Finland Number-one singles in Greece Number-one singles in Hungary Number-one singles in Iceland Number-one singles in Israel Number-one singles in Italy Number-one singles in Malaysia Number-one singles in New Zealand Number-one singles in Norway Number-one singles in Poland Number-one singles in Portugal Number-one singles in Romania Number-one singles in Russia Number-one singles in Singapore Number-one singles in Sweden Number-one singles in Switzerland Songs written by Shawn Mendes Songs written by Camila Cabello Songs written by Andrew Watt (record producer) Songs written by Benny Blanco Songs written by Ali Tamposi