He’s her arrogant billionaire boss. Older, moodier, and maddeningly irresistible. She’s the assistant who can’t stand him — but can’t stop fantasizing about him either. Welcome to Grumpy Silver Fox Daddy, a scorching enemies-to-lovers romance from A.J. Summ that will steal your breath and melt your Kindle.

She needs this job. He needs control. What neither of them expected was that their hatred would turn into something way hotter than tension-filled arguments and eye rolls in the boardroom. Behind his growls and commands is a man battling demons… and trying not to fall for the one woman who challenges him at every turn.

But when office sparks ignite and the line between personal and professional disappears, things get complicated — fast. He’s older, off-limits, and her boss. She’s younger, off-guard, and falling hard. Add a secret or two, a fake relationship twist, and a whole lot of late-night chemistry, and you've got the perfect slow-burn storm.

This isn’t just workplace romance — it’s forbidden, feisty, and filled with heart. A.J. Summ weaves age-gap tension, alpha vibes, and genuine emotional depth into a story that will have you blushing one minute and swooning the next.

Love billionaire romances with grumpy heroes and bold heroines? Grumpy Silver Fox Daddy hits every note — and it's available now on Bookdio with free pdf download and free books download options.

Don't wait. The daddy of all grumps is ready to steal your heart.