The Smuggler’s Christmas Rogue by Jane Charles

Miss Sheena MacGregor had loved Camdyn Oaks, Earl of Irvine, once upon a time. How could she not fall for his charm, honeyed words, and seductive lips? When she found out it was all a ploy, his betrayal cut deep. Never would she be such a fool again.
Camdyn Oaks had set out to charm secrets out of Miss Sheena MacGregor. Instead, she captivated him and stole his heart. Before Camdyn could explain, confess the truth, and beg for forgiveness, she walked away and refused to ever speak to him again.
Now with Christmas drawing near, Sheena is stuck on the English side of the border and forced to seek shelter in his home. Camdyn is determined to win her heart once again but fears that it may be lost to him forever.