If Love Were Enough (Order of the Crimson Lotus #1)
Suzanne Quill

Soon to be the Viscount Brookfield, Brandon Bradley arrives at a house party, at the insistence of his dying father, to renew. In all rights he should be home marrying Estella and begetting his heir. But he has a hesitation there he can’t explain, only sense. Estella is certainly pleasant enough, attractive enough, but
in all their years of friendship he has never felt anything but a coldness, a distance from her. Then he meets Lady Rutherford. Not only can she help him through the grief he is feeling, he is immediately attracted to her. Can he let down his father and Estella merely for his own benefit? Can he break the pattern of society and marry for love?