The former One Direction singer has remained silent on the death of his sister, but friends of Félicité and the family have been sharing their tributes.
One of the many grievers is Félicité’s boyfriend, Lukey Storey, took to Instagram to share a photo of his girlfriend.
Sharing a snap of Félicité alongside a video of the pair together, he wrote a heartfelt message, urging it should have been him.
He praised her for being there for him when he relapsed, writing: “I wish we had spent more time together sober, but we rarely were.
“It feels like it should have been me, and a bad dream I will soon wake up from”
“Too busy running away from our demons. Keeping each others pain in perfect company: We were pain twins.”
He added: “It feels like it should have been me, and a bad dream I will soon wake up from.
“I keep crying, not eaten or slept since I heard the news.”
He detailed their last conversation, revealing Félicité praised him for getting clean again.
As he got deeper in the post, he wrote: “I didn’t know whether I should even post this or make any of my feelings public because it feel too real, raw and personal.
“I’m f*****g angry. I’ve got nothing else.
“Félicité you graced my life in such a short time and I will now miss you forever.”
His heartfelt post is one of the many shared about Louis’ late sister, though his family are yet to comment.
Fans have flooded both Louis and Lottie with loving comments, but the pair are yet to respond.
Louis has since pulled out of Comic Relief after the shocking news.
Félicité was found in her home after a suspected heart attack on Wednesday, and despite the ambulance crew trying to resuscitate her, she was pronounced dead at the scene.