One of the two teenagers who died of suspected carbon monoxide poisoning at a holiday park in East Yorkshire had complained of a headache before they were last seen alive, an inquest heard. Cherish Bean, 15, and Ethan Slater, 17, both from Sheffield, died in a cabin at Little Eden Holiday Park, near Bridlington, on 18 February. Four men have been arrested on suspicion of gross negligence manslaughter in connection with their deaths. At an inquest in Hull, senior coroner Prof Paul Marks said the pair, who had both been "fit and well", were on holiday with Cherish's family and they had all spent the evening together the night before they died. Cherish left the main family lodge before 21:00 GMT for a neighbouring smaller cabin, known as the mancave, where she was staying with Ethan but returned about an hour later complaining of a headache, Hull Coroner's Court heard.…