“Hillside Boys” Is An Album-Less Single By German Singer-Songwriter Kim Petras. The Song Is About Falling For A Someone Who Only Treats Their Relationship As A Summer Fling And Feeling Sad When It Ends. I Wrote "Hillside Boys" About Rich Boys Breaking My Heart. The Brokest Kid In Private School And All My First Three Boyfriends Were Rich Kids And Broke My Heart. So When I Got To LA And Saw That All The Rich Kids Live In The Hills I Just Kind Of Put The Two Things Together And Wrote The Song." – Kim Petras Via All Access Music