Belle saw in Scrooge someone who was becoming more and more obsessed with money
Belle said that Scrooge would regret marrying her because he valued money above all else, including their relationship, and that his love for her had been replaced by his love for wealth. She realized that they were no longer compatible due to his changing priorities.
In Charles Dicken's A Christmas Carol, Belle and Scrooge were engaged as a young couple. Later Belle breaks off their engagement because she feels Scrooge's growing greed is changing him. When the ghost of Christmas Past reveals Belle to Scrooge and a grown woman with a family he realizes what he has lost.
Belle released Scrooge from his engagement because she felt that "another idol had taken his heart, a golden one". In brief Scrooge had started to pay more attention to his money and making money than to those he had previously loved. Therefore Belle did not want to be with someone who showed no affection to her
Belle ends her engagement with Scrooge because she realises that he has changed, and that his love for money outweighs his love for her. Because Scrooge had fallen out of love with her and money had taken his heart.
Because Belle realises that Scrooges only love has turn to money (a Gold idle). She confronts him with "would you seek me out of I were poor?". Scrooge doesn't answer confirming that he would not have.
Scrooge is surprised and nostalgic when he sees Bell, his former fiancée, in A Christmas Carol. He realizes the opportunities he missed and the love he let go. This encounter contributes to Scrooge's transformation throughout the story.
The name of Scrooge's fiancee was Belle -- he never married. They apparently became engaged while Ebenezer was an apprentice at Fezziwig, and maintained their engagement over his early years of acquiring wealth. However, she broke their engagement after she realized that Scrooge loved money than he loved her. Belle asked the young Ebenezer point blank whether he would want her as a wife now, knowing that he would get no dowry money for doing so. Ebenezer chose not to say he would do so, which was (unfortunately) the honest answer.
Belle Scrooges betrothed noticed that he haad changed in his attiude since she first met him and they were both poor. Now Scrooges focus was on money and she (Belle) told Scrooge that a new idle, a golden one had taker her place in his heart and therefore she would release him from his promise(to marry her)
Marley's ghost predicts that if Ebenezer Scrooge does not change his ways, he will end up like Marley - carrying the heavy chains of greed and regret for eternity. Marley warns Scrooge that he still has a chance to avoid his fate by embracing generosity and compassion towards others.
Scrooge feels uneasy when seeing Fan because she reminds him of his past innocence and connection to family that he has since rejected. Seeing Fan highlights the choices Scrooge made that led to his isolation and selfishness, causing him to feel guilt and regret.
I'm guessing that Tiny Tim would die, his co-worker would remain miserable, and everyone in town would still either hate his guts or regret and resent his greed.
Belle's husband's name in "A Christmas Carol" is not disclosed in the original story by Charles Dickens. Belle is the young woman who ends her engagement with Scrooge in the past when he becomes consumed by greed.