Her Adorable Cad by Marie Higgins

She vows he won’t break her heart again, but fate has other plans.
What more can the second daughter of a penniless lord hope to gain in life than becoming the companion to the Dowager Duchess of Englewood? Especially when she was resigned to being a spinster. However, misfortune strikes Priscilla Hartwell’s world once again, when the rogue who had broken her heart, returns and brings more havoc. She is determined not to let him steal her heart again.
Yet against her will, she finds she is drawn to him now more than ever before.