To Reside In Your Heart), also known by the initialism RHTDM, is a 2001 Indian Hindi-language romantic drama film written and directed by Gautham Vasudev Menon, starring R. Madhavan, Saif Ali Khan and Dia Mirza in the lead roles.

The film revolves around the love story of Madhav "Maddy" Shastri (Madhavan) and Reena Malhotra (Mirza).

The latter is set to get engaged to Rajeev "Sam" Samra (Khan), who is a young man settled in the US and Maddy's former college rival.

In contrast to him is his arch-rival Rajeev "Sam" Samra, a model student with whom Maddy is at constant loggerheads.

Sam graduates and leaves the college but promises Maddy that one day he will complete what was started (i.e., the fight).

Later, he and his college cronies attend a former classmate's wedding, where, by luck, Maddy spots the girl again and learns that her name is Reena Malhotra.

Upon being persuaded by his father and friends, Maddy decides to pretend to be Rajeev and tell Reena his true identity when the time is right.

She decides to call off her relationship with Maddy, who tries to convince Reena about his true intentions, but she refuses to talk to him.

In the meantime, Maddy decides to go to San Francisco, California, taking an offer made to him by his current employer, which initially he had declined, in order to ease his aching heart off his memories with Reena.

The success of the Tamil film Minnale led to producer Vashu Bhagnani signing Gautham Vasudev Menon on to direct the Hindi language remake of the film with Rajshri Productions, Rehna Hai Tere Dil Mein, which also featured Madhavan.

[7] An early title for the film was Koi Mil Gaya, before the team finalised Rehnaa Hai Terre Dil Mein.

Though Richa Pallod was initially considered for the leading female role, Dia Mirza and Saif Ali Khan were added to the film.

[9] Menon was initially apprehensive but said it took "half an hour" to agree and against his intentions, the producer opted against retaining the technical crew of the original.

Taran Adarsh called the presentation "not absorbing" though stating that the director " handled certain sequences with aplomb".