Actors Sydney Sweeney and Zendaya are honoring their Euphoria co-star Angus Cloud, who died Monday at age 25, with emotional tributes on social media.

Sweeney, who played Cassie Howard on the smash HBO series, described Cloud as an open soul who had the kindest heart before noting that she was struggling to find all the words to respond to the actors death.

You will be missed more than you know, but Im so blessed to have known you in this lifetime, and Im sure everyone who has ever met you feels the same, Sweeney wrote on Instagram Tuesday alongside a series of candid images showing her and Cloud together. This heartache is real and I wish we couldve had one more hug and 711 run. All my love is with you.