like all walter mitty types he get a buzz when he gets away with the lie then goes bigger and bigger on it.
the truth, when it comes out will be either
a- rich kid with mums money who lives on a trust fund
b- bloke who lives at home with parents and got left money by grandparents
c- complete fantasist living on credit cards and ignoring the demands
within one of these three lies 'milos', which is unlikely to be his name but is probably far more interesting than admitting his name is stuart or something and he's on incapacity benefit or a carer for his ageing mum