Lol I read the novel a long time ago so I have the answer to that....
Spoilers for anyone that wants them
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Stop reading if ya don't want it.
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Last change
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So they end up having a child and the child is exactly like him. No emotions but super smart.
The child gets imprinted with her mother and wants her all for himself, but not in a bad way. Like cute, kid that likes her mom? I did not feel bad incest vibes. The dad and son fight a little for her attention. And once she is pregnant again, her son did not wanted that, it was implied that he was going to help a miscarriage but stop since he did not wanted her mom to be sad. The baby is born and is a girl and is like our hero, after that I don't remember what happen next. But as to the question, no he does feel some affection towards his son but not really love him, more of a " if my wife wants one I will have one " kind of mind
He loves them especially their youngest haha...
What about their children? Will he not love them?