The Accidental Courtesan — Cheryl Ann Smith

To save a "bride-in-training" from arrest, Lady Noelle Seymour sneaks into a stranger's bedroom to replace a stolen necklace-only to lock eyes with the handsome Gavin Blackwell, cousin of the Earl of Seabrook. To explain her presence in his private chamber, she gives the first excuse she can think of: she is there as his new courtesan. Mystified by the beautiful woman who offered her services and then vanished, Gavin tracks her down-and demands that she keep her word...