Kept by the Bratva (The Valkov Bratva Book 2) by Ava Gray

One night with her was all it took. Now I'll burn the world to keep her. I'm Nikolai Valkov, Bratva spy and killer. I take what I want. And I want her. Amy. The innocent vet tech who haunts my dreams. Our one night together wasn't enough. When I saw her in that cartel den, I knew: She'd never leave my side again. Now she's in my world. My bed. My protection. But she's hiding something. A secret that could change everything. She thinks she can escape me. She's wrong. I'll eliminate anyone who tries to take her. Rival gangs. The cartel. Even my own brothers. Because Amy's carrying more than just my secrets. She's carrying my heir. In my world, love is a liability. But for her, I'll risk it all. Kept by the Bratva is a scorching hot, age-gap mafia romance featuring a possessive alpha hero, an innocent heroine with a secret, and enough steam to fog up every window in the Bratva mansion. Reader discretion advised.