The Earl’s Hired Bride by Deb Marlowe

Because an unmarried Earl must be in want of a bride . . . Every debutante in the ton wants to be the Countess of Hartford—and mistress of Hartsworth Castle. Never mind that Hart has no interest in marrying just yet, the young ladies hunt him as ruthlessly as a pack of hounds after the elusive fox. What he needs is a hired bride—one who is guaranteed to call it off at the end of the Season.
Because a girl with no prospects will do what she must to help her family . . .

Miss Emily Spencer must do something. Her mother’s health is failing and the notorious Duke of Danby is growing dangerously close. Why not hide in plain sight and pretend to be the Earl of Hartford’s betrothed? And getting paid for her troubles? It’s just what she needs to make her family comfortable again. Because love comes when you least expect it . . . Sparks fly when the two put their plan in motion—and deeper emotions grow. But how can they be together when the path they’ve forged only leads to their inevitable separation?