Which female lead of the novel worked in the male lead's brother's company, divorced and brought up a child, and the male lead had already fallen in love with them?

Looking for the title of the novel, the female protagonist worked in the male protagonist's brother's company and took care of the child after the divorce. The male protagonist liked the female protagonist for a long time, but after the female protagonist divorced, it was revealed that the male protagonist was younger than the female protagonist. There was a paragraph in the novel that said that the male protagonist had a plane accident and lost part of his memory. He vaguely remembered that the novel was called something three. Please help me find it.
It was a modern novel. He still remembered a plot where the female lead became a strong woman. When others said that she had found a rich second-generation female lead who only knew how to eat, drink, and play, she said domineeringly,"I'm willing to raise him."

Answer 1

"The All-rounded Dainty Wife, Young Master Yan's Little Ancestor Is Fierce and Flirtatious." After the divorce, the female protagonist worked in the male protagonist's brother's company and started anew with the child. The male protagonist had long been interested in her. I hope you like this fairy's recommendation. Muah ~😗