He kept inquiring debt and she dumped him. Is it right to dump a boyfriend for that reason? If he's careless about his money, spends it on expensive things and acquiring overdue bills?
He used to be poor for a long time (his parents were poor) but he was smart, got a scholarship and is a professional engineer. However, he was too excited about the amount of money he was making that he got carried away. He never knew what it was like to earn more money and be wealthy. He didn't know how to manage it all.