Cassidy joined Payne's close friends and family to mourn the former One Direction member's death as he was laid to rest at a private service outside of London.

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 friends that she gave him an ultimatum to stop using drugs. “His drug use was causing a lot of drama,” said the friend, who speaks to the 25-year-old influencer regularly.

Liam Payne's girlfriend Kate Cassidy had been in Argentina with him, but flew home a few days before the One Direction star tragically fell to his death from a hotel balcony