The Split
This couple's ultimate separation was a bit mystifying to me.
Manina kept citing his son as the reason, but -- as was already pointed out -- his son was grown and about to go off to college (just accepted at Columbia) anyway. It was too late to go back and try to raise him: those years (and that opportunity) were gone. Plus, now that everything had been exposed to the air and sun -- so to speak -- it would be an opportunity for a new relationship between father and son as two adults.
Was it really because of guilt over the taboo situation they were in? Back in 1950 it certainly would have been frowned upon for a couple to be "shacking up," and even more so when the man was still married! (That latter one still holds true today...)
Once they were busted by the son and wife, one would think that would be an opportunity to start over with a clean slate (especially since the divorce would be granted). I was very surprised -- and sad and disappointed -- that they broke up/separated at the end, especially since they both appeared to still be very much in love.