To Love a Bear by Emilia Hartley

So long as the guys call him Boomer, Theodore Parker is content with his life. He has a place to stay, work to do, guys to hang out with—or fight with—when he wants, and the wilds of Montana to roam when he needs to be alone or go full bear. He has everything he needs.
At least he thinks he does.
Then, while he’s out logging with the guys, he finds a woman on the side of the hill, hurt and unable to remember who she is. When he takes her home to help her recover, he knows it isn’t a permanent arrangement. He knows she’ll have to go back to her old life someday.
But the more he’s around her, the more he realizes his life isn’t complete without her. He’s not so selfish as to doom her to a rough life with a bear-shifting mountain man, though. He wants what’s best for her, even if that means leaving him, destroying his contentment forever. So, he protects her and keeps quiet about his shifting, so she isn’t forced into something she doesn’t want.

What Emmy White wants, once she remembers herself, is Boomer. And safety from her past. What she doesn’t want is another relationship with a secretive, overprotective man. She thinks Boomer might be different, but how can she trust him when he won’t do the one thing she’s asked of him—give her the power to defend herself from the monster lurking in her past?