You’re Not My Mate by Sam Crescent

Rocco rejected his mate. With all the trouble in Poison, he just doesn’t have time to deal with the reclusive woman. He’s not ready to be mated, so the easiest thing for him to do is reject her. Only, the club needed her, as did the pack.

Rose Swift was hurt. She had witnessed what it was like for real mates, but her mate didn’t even want to know her. So, when she’s asked to deal with the mess an insane doctor had created, she intends to steer well away from Rocco. He is not her mate, nor will he ever be. If only it was easier to deny him.
Rocco wants to keep his distance, but the way Rose smells, the way she looks—it’s like she’s a magnet, and he can’t resist.
When one of Dr. Milton’s experiments comes crashing into the pack, there is something different about this one. He’s in control, he’s stable, and above all else, he somehow manages to become good friends with Rose. Rocco convinces himself he’s only sticking around to protect her, but being around her is exactly what the wolf ordered.

Is there any way that Rose can forgive him? He will not turn his back on her again.