Sarah Miller, Mail Order Bride

Sarah was overwhelmed with joy when she reads the words 'will you marry me?' in Aaron's letter. Upon arrival, however, she finally meets the man she's supposed to marry but he's burdened. She fully realizes that when he wrote "there is no greater pain than that of a man who has lost his wife" this could be something that could shape their marriage forever. She realized then that she knew very little about Aaron. She had been so eager to find someone to fill the emptiness of her life that she had not stopped to consider the repercussions of marrying a stranger.
Who was this man?
And could she learn to love him?