Liam Payne's girlfriend, Kate Cassidy, is still 'in shock and disbelief' following his unexpected death at 31 years old. A source tells ET that she’s trying her best to process the loss, leaning on loved ones,

Liam Payne’s grieving girlfriend Kate Cassidy is giving more details about her decision to leave Argentina in the days before the singer plunged to his death — and she’s telling “His drug use was causing a lot of drama,