The Bride Ransom by Piper Davenport

Gwendolyn Butler has been in love with Andrew Simmonds since she was fifteen years old. He saved her from a potentially harmful fall from a horse and when she looked into his eyes, she was immediately lost.
When Andrew Simmonds meets Gwen, he realizes he has met the woman he wants for life, however, she is too young. He writes to her, promising a commitment, but when he is badly injured at Shiloh trying to save his best friend, he makes the decision to cut ties with his beloved in order to protect her from his hideous scars. A threat to his brother-in-law prompts a plan of action, but something goes wrong. Gwen is kidnapped and held for ransom.

Will Andrew get to her in time?
Will they make it down the aisle, or are they destined to always be apart?