Live for You by Michele Mills

The world ended and nothing was the same, and in this new order he’d changed his name to Raider—because he took what he wanted.
Women were scarce in post-apocalyptic California and if you found one you wanted, you had to immediately claim what was yours. So when a desperate beauty with striking green eyes and legs that went on for miles stepped into the dangerous all-male compound, he wasn’t above tying her up for her own safety in his isolated mountain cabin, until she realized the truth of their bond. And him getting his seed in her and swelling her up with his kid? Perfect.
She’d see he was doing this all for her.
Eventually.