Tempting the Scarred Duke by Tessa Brookman

She desperately tries to keep her secret. He will do everything to uncover it.
With her reputation in shatters, Diana must make the hardest decision of her life. She must stop corresponding with her childhood lover and pen pal, Matthew. And when she’s shunned by her family and forced to move to Kent, she ends up right in his arms…
Duke Matthew returned from the war a scarred and traumatized man. His past haunts him, yet Dee, his childhood lover, and her letters are all that bring him solace.Refusing to open up again, everything changes when a new lady arrives in town and he’s convinced it’s Dee. Yet, she denies everything…
As Diana struggles to keep her identity a secret, afraid he will find out about her past, she tries to distance herself from him, yet he only inches closer. But when her past begins to catch up to her, threatening her and the new life she’s building, Matthew may be the only one who can protect her…