A 5th Avenue Affair (Zebra Historical) (American Heiresses)

is part of the Zebra Historical Romance line.
==Book Description==
No one expects true romance from... A 5th AVENUE AFFAIR.
WOULD SHE HEAL HIS HEART...
Despite her sisters' nuptial successes, Clara Carrington is decidedly not interested in a husband -- her charitable work is far more fulfilling than marriage would be. Or so she believes, until her sister Pauline sends her an ailing man, recently discharged from the British Army. Captain Stone Hawke -- brooding, melancholy, and ruggedly appealing -- may be the exact opposite of the New York gentlemen who court Clara, but he's also the only man who has ever made her heart beat faster....
OR WIN HIS LOVE? 
With no place else to go, Stone reluctantly accepts the shelter of the Carrington home -- although he doesn't believe a Manhattan socialite like Clara can understand what he survived, and lost, in India. But his stubborn intentions are no match for Clara's sunny optimism -- or the temptation to counter her spirited attempts to draw him out of his shell with a few well-timed kisses. Suddenly, the passion that flares between them engages Stone in a new kind of battle -- and love is a victory he longs to claim....
(Description from paperbackswap.com)