To Buy a Bride — Roberta Leigh

Jealousy stabbed Philippa as she thought of Rose and Luke together. Jealousy--and a deep sense of loss.

Loss of what? Of Luke? Was she so possessive that she couldn't bear to think of him with another woman even though she didn't want him herself?

But she did want him! The realization stunned her. It was an annihilating admission that destroyed the whole fabric of pretense she'd constructed from the day she had married Luke.

Hero: Luke Rickards
Heroine: Philippa Ellwood