Because You're Mine (Avon Historical Romance) 
Young, high-spirited Lady Madeline Matthews is expected to wed an aging, lecherous lord. But she would rather shame herself in the eyes of society than sacrifice her freedom, and resolves to render herself unmarriageable by indulging in a torrid affair with Britain's most acclaimed actor and notorious womanizer, Logan Scott.
Because the Heart. . .
He is a legend in the footlights and in the bedchamber. But when the curtain falls, Logan is an intensely private, guarded man still tormented by past betrayals that cut deep into his pride and his heart. Now a forward little minx who seems completely out of place in the bright, sophisticated world of the London stage is disrupting his orderly existence with her constant presence, her unspoiled beauty and vibrant charm. And what begins with an onstage kiss threatens to blossom into something more rapturous and real. But first Logan and Madeline both must be brave enough to drop the masks they hide behind. . . and reveal their true selves in the golden glorious light of love.
Because the Dream. . .Young, high-spirited Lady Madeline Matthews is expected to wed an aging, lecherous lord. But she would rather shame herself in the eyes of society than sacrifice her freedom, and resolves to render herself unmarriageable by indulging in a torrid affair with Britain's most acclaimed actor and notorious womanizer, Logan Scott.
Because the Heart. . .
He is a legend in the footlights and in the bedchamber. But when the curtain falls, Logan is an intensely private, guarded man still tormented by past betrayals that cut deep into his pride and his heart. Now a forward little minx who seems completely out of place in the bright, sophisticated world of the London stage is disrupting his orderly existence with her constant presence, her unspoiled beauty and vibrant charm. And what begins with an onstage kiss threatens to blossom into something more rapturous and real. But first Logan and Madeline both must be brave enough to drop the masks they hide behind. . . and reveal their true selves in the golden glorious light of love.
Reviews
Maddie decides to have an affair with Logan thinking that a high profile scandal will cause her bethrothed to break their engagement. Logan is dead set against a relationship because she is in a class he can never be included in. Somewhere along the way they fall in love.
When Logan finds out that Maddie set out to use him he is devastated and decides he never wants to see her again. Maddie had decided against using Logan to get out of her engagement because she fell in love but he does not believe her. When he finds out she is pregnant, Logan marries her but promises her it won't be a happy marriage.
This book is a good lesson on betrayal, love and forgiveness and anyone with a heart won't be able to resist it.