Zendayahas reacted to the unexpecteddeathof herEuphoriacostarAngus Cloud.

In an emotionalInstagrampost shared Tuesday, theEmmy winnerremembered her “brother” and the joy he brought to her life before he died at the young age of 25.

“Words are not enough to describe the infinite beauty that is Angus (Conor),” Zendaya, 26, captioned a black and white photo of Cloud. “I’m so grateful I got the chance to know him in this life, to call him a brother, to see his warm kind eyes and bright smile, or hear his infectious cackle of a laugh (I’m smiling now just thinking of it).”

She continued, “I know people use this expression often when talking about folks they love…‘they could light up any room they entered’ but boy let me tell you, he was the best at it. I’d like to remember him that way. For all of the boundless light, love and joy he always managed to give us. I’ll cherish every moment.”

She ended the post with a note of respect for Cloud’s family: “My heart is with his mother and family at this time and please be kind and patient as grief looks different for everyone.”

The actors appeared alongside each other in seasons 1 and 2 of HBO’s dark high school series, with Zendaya portraying drug-addicted teen Rue and Cloud played her drug dealer and friend Fezco.

Angus Cloud/Instagram

Angus Cloud and Zendaya

Matt Winkelmeyer/VF22/WireImage for Vanity Fair

Zendaya and Angus Cloud

Cloud’s death came shortly after thedeath of his father. “The only comfort we have is knowing Angus is now reunited with his dad, who was his best friend,” the statement continued. “Angus was open about his battle with mental health and we hope that his passing can be a reminder to others that they are not alone and should not fight this on their own in silence."

Jeff Kravitz/FilmMagic

Angus Cloud, and Zendaya attends HBO’s “Euphoria” Season 2 Photo Call at Goya Studios

Never miss a story — sign up forto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.PEOPLE’s free daily newsletter

source: people.com