I dont think that's why
He hates his blood and doesn't want to continue his family name
He's litterly raising his brother's son
Oh gosh.... just realised his parents are probably brother and sister (⊙…⊙ )
It's confusing af but in the novel he repeatedly talks about how much he hates his blood and how he doesn't want to continue it, but he loved his brother and that's probs why he's raising Damien
（￣へ￣） basically if he has a child with Vivian they would have to be with Damien and reproduce to carry on their blood.... that's why he doesn't want a child...well I dont blame you hun (⊙…⊙ )