David Cassidy was Lorde's first crush.
The Green Light hitmaker - who is on her Melodrama tour in Australia - took to her Instagram story to pay tribute to the Partridge Family star following his tragic death on from organ failure.
The 21-year-old singer uploaded a short video of Cassidy playing Keith Partridge in the hit 1970s TV series performing the song I Woke Up In Love This Morning with his co-stars Shirley Jones, Danny Bonaduce, Susan Dey and Brian Foster.
She accompanied it with the caption: "My first crush. Bye kid."
She then shared a second video of Cassidy wearing a pair of tight purple trousers and a blue T-shirt and claimed her obsession with the singer as a young man is the reason why she has always dated "skinny boys."