A former lover of George Michael fears a sex drug may have played a part in his death , it was reported last night. Escort Paul Stag claims the tragic singer was hooked on a drug known as 'Liquid G' during their nine-year relationship. The 48-year-old alleges the star used the codeword 'champagne' for when the Wham! heartthrob wanted a delivery of the drug. According to The Sun , George equated sex with drugs and struggled to separate the two, even up until his death. Paul told the newspaper he believes it is "100 per cent [George] would have had chems on Christmas Eve before his death."