The Alpha's Mistress

*Warning - Contains 18+ Content* He holds my face firmly between two hands. "Sienna, I'm not going to have you for the first time one of Maren's guest rooms when you're intoxicated." "You're not?" "No. It will be in my bed, and I'm going to take my time with you." His gaze falls to my lips. "Fuck Sienna, I'm going to take all night." *** Sienna has been in love with her Alpha since she could remember. He's rough, dangerous and the epitome of raw sex appeal. The problem is, he is her best friend, and strictly off limits. Tradition mandates he marry a woman of noble birth, and that is not her. She knows this is for the best, until she becomes his mistress, and things start to change. As she falls for her best friend, she must reconcile a deadly secret she has been keeping from him for years, that could change everything. Onyx has sacrificed everything to become Alpha. So, not marrying for love shouldn't be such an issue. His entire life he has denied his feelings for his best friend, until he is forced to take her as his mistress to grant her protection. With threats growing against them, and when his prospective wife candidates start showing up murdered, he make some difficult decisions. **Dual POV, friends-to-lovers, Alpha, mates, 18+**