A Most Unusual Mistress (Rogue Scandals #3)
Raven McAllan

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Finding her intended bollocks-deep in his mistress when she is trembling with wanting and unsuppressed desires, does not impress Adriana. If being a mistress entails being a part of such passion, then a mistress only she will be.
Ashley, Earl of Addersley, thinks otherwise. He wants a wife on his terms. Terms that would send this lady of the ton screaming…or would they?
An agreement, a challenge, a single night of mind-blowing passion very well may determine the outcome. Wife or mistress? Which shall it be?