The basic fact is that there was in no way a time when 'I turned self-realised'. Given Diane's Gold Digger frame of mind and the fact that it's Nanase, no just one thinks anything of it, such as herself. John C. Reilly’s Dr. Steve Brule is one of the strangest creations to arise from the Tim and Eric universe, which is definitely stating a thing, thinking of the competition.
In the close he lets her go, partly since at the end of the working day he continue to loves his wife also a great deal to critically think of leaving her and partly since he failed to want the war to dictate his existence any additional than it previously did - leaving his spouse and kid for a girl he fulfilled on the frontline would suggest he could never ever go away the horrors he'd known there driving him.