Eastside is a song by Benny Blanco, Halsey, and Khalid. It is a soulful, upbeat track about two people in love, despite the obstacles that stand in their way. The song is a celebration of their love and a reminder that they will always be together,
From Wikipedia
"Eastside" is a song by American record producer Benny Blanco and American singers Halsey and Khalid. The song was released on July 12, 2018, as Blanco's debut single, and the lead single from his debut studio album Friends Keep Secrets.