My friend is engaged, but his ex-girlfriend is asking for money for expenses she incurred during their relationship. They weren’t legally engaged, so is she legally entitled to this? What should he do in this situation?

Under Indian law, expenses incurred during a relationship, even a long-term one, are generally not legally recoverable unless there’s a legally binding agreement. Since they weren’t legally engaged, she likely has no legal claim. He should politely but firmly inform her that he won’t be paying and consult a lawyer if she persists.