Yeh Saali Aashiqui

After Sahil discovered Mittee cheating in exams and confronted her, their relationship fractured. Mittee staged a fainting spell to win Sahil back, but when that failed to fully repair the trust, she escalated by hurting herself and fabricating a rape allegation against Sahil. This calculated lie was designed to destroy Sahil's reputation and get revenge for his accusation of her cheating.

Earlier, Mittee had already manipulated the situation by having her friend confirm Sahil's complaint about her cheating, showing her willingness to use deception.

Sahil's identical twin brother Surya Mehra visited the mental hospital to obtain signatures for Sahil's release. During a confrontation between the brothers, Sahil overpowered Surya in a scuffle and escaped, putting his revenge plan into action.

Sahil had been planning his revenge even while showing signs of improvement in the hospital, indicating he was biding his time.

Sahil created a compilation video using recordings of Mittee's own voice, containing her admissions of cheating and the false stories she had told about the rape accusation. He projected this video on the day of her engagement to Anuj, publicly exposing her lies and manipulation.

Sahil had been collecting evidence and building his case while tracking Mittee with the help of her confidante Kavita.

Surya died, not Sahil. The entire final sequence was an elaborate revenge plan. Sahil had secretly freed Surya from the mental asylum earlier and instructed him to wait in Mittee's parents' room. When Mittee shot and killed the person she believed was Sahil, it was actually Surya. Sahil survived by swapping identities with his twin brother.

The setup began when Surya visited Mittee to 'thank' her for killing Sahil - a confusing moment that only makes sense once the twist is revealed.

Surya believed Sahil was dead because he was present when Mittee shot and then struck the victim with a cylinder in her parents' room. He came to thank her, not knowing that Sahil had orchestrated the entire situation and that he himself was the one who had been killed, not Sahil.

This moment appears before the whistle revelation that exposes the identity swap.

Mittee's father had a heart attack when the video revealing Mittee's lies about the false rape accusation and her cheating was shown publicly at her engagement ceremony. The scandal and public humiliation of his daughter's true character was too much for him to bear.

The engagement was meant to be a fresh start for Mittee with Anuj, but Sahil's exposure destroyed that possibility.

The whistle was a signature sound that only Sahil could produce. When Mittee heard the whistle after Surya's death, she realized Sahil was still alive and that she had killed the wrong person. This sound prompted her to chase after the real Sahil, leading to her ultimately killing Surya in her mistaken rage.

The whistle was established as Sahil's personal identifier earlier in the film, making it the key to understanding the final twist.

After Sahil's video was shown at the engagement ceremony, Anuj learned the truth about Mittee's false rape accusation, her cheating in college, and her manipulative nature. Faced with evidence of her lies, Anuj immediately called off the engagement.

Earlier, Anuj had begun questioning Mittee's story after seeing her fear and the attacks from Sahil.

Sahil's institutionalization for something he didn't commit, the destruction of his reputation, and being trapped in a mental hospital for years fueled his desire for complete revenge. He wanted Mittee to experience public humiliation, lose her relationship, cause family damage, and ultimately face justice - but through a plan that put her in a position where she would kill someone she thought was her tormentor, only to discover her mistake.

Sahil's improvement in the hospital was actually him planning his revenge while waiting for the right moment.

Mittee lured Sahil to her parents' room under the pretense of meeting him there. During the confrontation, she shot him with the last bullet, and when he remained alive, she used a heavy gas cylinder to strike him repeatedly until he died, all while her parents watched. This was the climax of her desperation to end the threat Sahil posed.

The confrontation was set up as Mittee's attempt to finally resolve the situation that had haunted her.

Before the final confrontation, Sahil had secretly freed Surya from the mental asylum where both were held. He then had Surya wait in Mittee's parents' room, positioning him as the target. When Mittee confronted the person she believed was Sahil, she killed Surya instead. Sahil, disguised or positioned differently, survived and watched the entire events unfold.

The escape scene where Sahil overpowered Surya was actually the setup for this identity substitution.

Kavita was Mittee's confidante who secretly sided with Sahil. She provided information and assistance to help Sahil track and intimidate Mittee, acting as his ally within Mittee's inner circle to carry out his revenge plan.

Kavita's betrayal was hidden until her assistance to Sahil became apparent during the harassment escalation.