I recommend the book "The Reborn Prince's Ruthless Seduction". It has a lot of similarities with the plot in the given information. In her previous life, the female protagonist was abandoned by the unfaithful male protagonist. After her rebirth, she became the Crown Princess. The male protagonist changed into a stronger figure for her. The female protagonist gradually fell in love with him, and the two of them depended on each other. I hope you like this fairy's recommendation. Muah ~😗