Rule Number One: Do not touch the Host.
Rule Number Two: Do not speak unless spoken to.
Rule Number Three: Under no circumstances are you to fall in love.
Cillian Frost is a myth. A tech genius, a billionaire, and a recluse who hasn't been seen in public since the accident that scarred his hand and froze his heart. He lives in Glass Peak, a high-tech fortress on top of a mountain, designed for one thing: absolute, sterile silence.
Elara Vance is a mess. A talented but broke violinist with a dead car, a loud personality, and a desperate need for a paycheck. When she arrives at Glass Peak to house-sit, she expects an empty mansion.
Instead, she finds Cillian.
And he is not happy to see her.
Before he can kick her out, the storm of the century hits, burying the access road and trapping them together. Cillian tries to enforce his cold, rigid rules. Elara breaks every single one of them. She plays music in his library. She argues with his logic. She fills his grey world with chaotic, blinding color.
But when Cillian's ruthless board of directors threatens to oust him for being "unstable," Elara does the unthinkable. She crashes his video call and announces she's his fiancée.
Suddenly, the enemy isn't the storm outside-it's the lie they have to live.
To save his company, Cillian has to play the part of the devoted lover.
To save her career, Elara has to wear his ring.
But as the days turn into nights by the fire, the line between "fake" and "real" begins to blur. Cillian is learning that there are some variables you can't control, and Elara is realizing that beneath the ice, the billionaire burns hotter than she ever imagined.
When the plows finally arrive and the real world invades their sanctuary, Cillian has a choice to make:
Retreat back into the safety of the silence?
Or let the music play on?
Mr. Billionaire's Frozen Heart is a steamy, Grumpy x Sunshine, forced proximity romance featuring a broody tech mogul and the chaotic musician who brings him to his knees. No cheating, no cliffhangers, and a guaranteed Happily Ever After.
