
His father is the brown-haired one, and she didn’t cheat. She said her and Philip are just friends while Philip did has a crush on her, he painted that painting in order to confess to her but she already loved his father and that painting portrayed the moment when she felt in love with him. And yeah, his grandparents were the one financially supported him and his sister

While yea he was right to be suspicious he could've easily been proven wrong with a DNA test. Instead he projected his insecurities on his son which is scummy. And yeah he abandoned him after his mom died.
I mean I feel like if boundaries are respected a person who has a crush on you can still be friends with u, but alotta ppl dont feel that way so I get his suspicious, but that does not excuse his actions.

True, in the novel, it said Phillip and her were childhood friends and at some point their familys thought of geting them engaged, it didn't happend. He was in love with her as you said, he painted her and give her the painting.
The father was jealous and thought she cheated on him, that Ash wasn't his son because he had heterochromia( his eyes were of two color) even though she wasn't in contact with Phillip anymore, but the day she died, she met him when she was with Ash buying him paints.
There was a bomb Phillip protected her son and she put herself over them to protect her son and died. The father thought that was proof she cheated, so he married his lover and abandoned Ash.
Soo did his mother cheat or not? Still confused. Is his father the brown haired one or the Marquis??