The Heart Goes On: An absolutely heartbreaking historical romance novel

He drew in a deep breath. "I know it's too much to ask, but I ask it anyway... Will you wait for me, Harriet?" 1819, Isle of Mull, Scotland: When Allan MacDougall tells his sweetheart Harriet Campbell he loves her on the eve of his departure to the New World, it breaks her heart. Because there is no way for her to go with him. She promises to wait for him, even though it could be years before they are reunited. They vow to write, but when crucial letters go astray, they feel further apart ...