Billionaire's Perfect Bride

Richard will always be mine, Elena," The corner of her lips curled up into a sly smirk. Advancing closer, she leaned in to whisper against my ear softly. "Even if I have to kill you to have him to myself, I'll do it."
He's the man she's always loved. The man she's always felt strongly for.
But he has eyes on one person only; her hot-shot surgeon sister.
When her twin sister fails to show up on her wedding day, Elena has no choice but to step up to the occasion and take her place — but marriage to the noble Richard Delmonte is both exciting and torturous.
The elusive, established billionaire mogul and one of the most eligible bachelor of New York is the only man she's ever loved. The only man who's ever filled up her nights. Yet he's madly in love with her sister.
Now that her dream has come true and she's married to him at last, Elena vows to do everything in her power to win him over.
Even if it costs bringing down the heavens for him.