Sydney Sweeney couldn’t stop crying after the death of her ‘Euphoria’ co-star Angus Cloud. The 26-year-old actress made her name playing popular highly-strung high schooler Cassie Howard in the raunchy HBO show alongside Angus, and she has now said she and her fellow stars on the series were left so devastated when he died on 31 July from an accidental overdose aged 25 at his family home in Oakland, California they kept weeping on phone calls with each other. Sydney told Glamour UK magazine’s December digital issue about their reaction to Angus’ passing: “(My co-stars and I) were constantly on…