Billionaire's Mistress

She betrayed herself and gave herself over to the strange man who was both wealthy and unbeatable so that her sister may be cured. After one night of intense sexual activity, she grabbed the money and ran off.
She believed that from this point on, she would have no further interactions with him.
They ran into each other once again three years later. He was a titan in the business world. She served in a less important managerial role at the club. They had another chance encounter because of the hand of fate. They had different sparks this life.