The Long Return by Rose Pearson

My only true love is gone. I only wish he knew how much I loved him. Arabella Marchmont was destroyed when she found out that Jacob died in the war. It was her fault he was there in the first place. She just couldn’t take him seriously when he proposed, and before she could rectify her mistake he was already gone. The agonizing wait for him to return began, but tragedy struck leaving Arabella to only wonder what could have been. Jacob was gone from this world, and life had to move on. A long time later, when the Earl of Winchester proposes, everyone understood that it was time, finally even Arabella. A simple life, free of heartache, might be just all that she could hope for. But just as she starts to set her mind to the marriage, a familiar face limps back to Grosvenor Square. Shockingly, her Jacob has returned, but is he even the same Jacob that left all that time ago? Could he ever even be the same Jacob that proposed to her? And even if he could be, was he already too late? The Long Return is the second book in the series, The Returned Lords of Grosvenor Square. Welcome to the exciting world of Regency London!