Gloria Bailey and Linda Davies laugh when they recall singing The Beatles' ``When I'm 64'' to one another when they fell in love as closeted social workers in Massachusetts. Looking back, they say their younger selves could never have imagined they'd one day be openly gay, let alone one of the seven high-profile couples who persuaded Massachusetts' top court to rule they can marry beginning May 17. But just as unfathomable, the couple of 32 years says, is that they'd ever be 64. Growing old seemed to Linda and Gloria like something other people did. Or, more specifically, something older...