Thiruvilaiyaadal Aarambam

Thiru accepts the money because Guru confronts him after Priya's suicide attempt, arguing that Thiru's poor background cannot provide comfort for Priya. Rather than fighting a losing battle, Thiru cleverly takes the money with a secret plan, he intends to use it to build himself into someone worthy of Priya, making their love sustainable long-term.

Priya discovers that Thiru negotiated with Guru using their love as collateral for the money. She realizes her romance was treated as a business transaction, Guru paid Thiru to leave her, and Thiru used that money to build his empire. Feeling betrayed that her love was treated as something tradable, she ends the relationship despite Thiru's success.

After Thiru's business surpasses Guru's and defeats all his schemes to undermine it, Guru becomes desperate. He arranges Priya's marriage to someone else and hires goons to kill Thiru, hoping to permanently remove the obstacle to his plans and stop Thiru from interfering with the wedding.

Thiru returns the money he borrowed from Guru to prove his integrity and ethics. He explains that he used love as his collateral, his determination to protect and win Priya drove his ambition to succeed. By repaying every rupee, he demonstrates that his success was built on genuine effort, not exploitation of their relationship.

Guru is moved by Thiru's honesty and unwavering ethical stance. Despite becoming wealthy and powerful enough to challenge Guru, Thiru voluntarily returns the money and explains that love was his motivation, not greed. This combination of love, ambition, and integrity convinces Guru that Thiru will genuinely care for Priya, earning his blessing.

Priya is devastated by Guru's violent reaction to her relationship with Thiru. Seeing the man she loves assaulted because of her, and realizing her own family considers her love shameful enough to warrant violence, she feels trapped and desperate, leading her to contemplate taking her own life.

After being thrown out by his father who suspected the money was illegal, Thiru uses the funds from Guru to launch his own business. His street-smart nature and determination translate into real entrepreneurial success, allowing him to become a wealthy, self-made businessman within months, eventually surpassing Guru himself.

Thiru's father throws him out because he suspects the large sum of money Thiru brought home was obtained illegally. Having constantly criticized Thiru for being unemployed, the sudden windfall raises immediate suspicion about its source, leading his father to reject the money and drive Thiru away.