Liam Payne’s girlfriend Kate Cassidy will tell of her torment at the tragic singer’s death in her first television interview with Lorraine Kelly.

MailOnline can reveal that the American influencer will share the former One Direction singer’s mental health struggles and reveal the dark sides of fame which he endured.

Kate, 25, is also expected to talk about how she has dealt with her own struggles and grief since he died after falling from a third floor hotel balcony in Buenos Aires, Argentina.

She will the first guest to appear on Lorraine to launch its March4March campaign, which is aimed at supporting the one in four Brits who suffer with low mood as research reveals it’s clinically proven that exercise and movement is beneficial in aiding better mental health.

Pete Wicks, Tyler West, Vicky Pattison, Vogue Williams, Ellie Simmonds and more will all share their personal stories as part of the programme’s month-long mental health initiative.

Lorraine said: ‘I’m so pleased we are launching a campaign dedicated to destigmatizing the conversation around mental health and I’m so grateful to the amazing names who’ve already agreed to bravely share their stories and pledge their support for such a worthy cause.

‘I’m looking forward to getting out walking and talking and I look forward to taking our amazing viewers along with me.’

Kate attended Liam’s funeral last year in Buckinghamshire and has mostly stayed away from the spotlight since his devastating passing in October last year.

The model left the star in Argentina to return to Florida to look after their rescue dog, Nala at their home in Florida.Kate has openly expressed her grief on social media since Liam’s death on her social media three days ago sharing an old picture of her and Liam.Marking her return to social media, she wrote: ‘I thought this place would feel empty without you, but instead, it’s filled with the warmth of this moment we shared.’Lorraine, 65, will ask its viewers, celebrity supporters and members of the show’s family to pledge a number of steps across the month of March, with an overall target goal of reaching at least 3 million steps in a bid to metaphorically walk the entire length of the UK.Kate attended Liam’s funeral last year in Buckinghamshire and has mostly stayed away

from the spotlight since his devastating passing in October last year.

In a previous interview with The Sun, Kate revealed the couple had ‘our own separate lives’ as she spoke out for the first time following his death at the age of 31.

Liam’s American girlfriend Kate had originally accompanied him to Argentina, ostensibly to watch his touring former bandmate Niall Horan perform at Buenos Aires venue Movistar Arena.

She left a day early in order to to look after their rescue dog, Nala at their home in Florida.

The social media influencer, who is from New Jersey, said she and Liam were not the sort of couple who would text all the time when apart and she now wishes she hadn’t left Argentina early.

She told The Sun: ‘It was a tragic accident and no, I never did think (he might die young). But, you know, we did have our own separate lives — this wasn’t the first time we have travelled separately.

‘I just never thought this would have happened, that it would turn out the way it did. It still doesn’t feel fully real for me that he’s not here.’

Kate has openly expressed her grief on social media since Liam’s death and on Monday posted her latest tribute.

Sharing a snap of her phone, Kate appeared to have made herself a new beaded phone charm with the number ‘444’ and an ‘L’ laced through the thread.

Kate previously added the number 444 to her original tribute to Liam when she first broke her social media silence in October after his death.

The figure has several hidden meanings behind it and is considered an angel number in numerology

 
Angel numbers are repeating sequences of digits, normally in sets of three or four, and they are believed to hold spiritual guidance.In numerology, 444 is a sign that the ‘angels are with you’ and are ‘there to guide you step by step’.The way the figures are formed means they represent stability and a reassurance that you are not alone.After his death, she referenced the angel numbers as she revealed they had been planning to marry in the weeks leading up to his passing.