You may be a stranger to Two Strangers (Carry a Cake Across New York), but you won’t want to be for long. This completely original musical arrived at Broadway’s Longacre Theatre from the West End and represents a return to the Y2K rom-com, now on stage in an endearing two-and-a-half-hour musical adventure across Manhattan.  Upon entering the theatre, you’re greeted by two stacks of dramatically oversized suitcases and one normal…