Fated Hearts. Tragic Characters in Classic Lit

A Scottish Baron returning from two decades at war meets the daughter he denied was his, and the wife he divorced, only to learn that everything he'd believed to be true was a lie. What he can't deny is that she's the only woman he's ever loved. They're not the young lovers they once were, but when passion flares, it burns more hotly than ever it did in their youth. They soon discover, it wasn't fate that drove them apart, but a jealous enemy who played on his youthful arrogance and her vulnerability.
Now that old enemy has resurfaced, more treacherous than ever.