Riches to Rags, Book 1 — Lena Bourne

Her stepbrother was a cocky, arrogant bastard, but also the love of her life.

For five years, Julia has been cut off from her family after being disowned by her father and abandoned by the only man she ever loved, her stepbrother Brandon. He was the one who told lies about her, denied their love and caused her father to kick her out, so he could inherit her father's billions. Julia has been consumed by thoughts of revenge ever since.
On his deathbed, her father finally forgives her and welcomes Julia back into the family, leaving her his vast fortune. Brandon's come far though, and is now the CEO of her father's company. He's not about to give up his position willingly. The love they once shared was real. Now they're free to marry and share it all. Brandon will see that happen, whether Julia agrees or not.