The film stars Saif Ali Khan and Rani Mukerji, with Rishi Kapoor, Kirron Kher, Rati Agnihotri and Jimmy Sheirgill.

At the 50th Filmfare Awards, Hum Tum received 8 nominations and won 5 awards, including Best Director (Kohli), Best Actress (Mukherji), Best Comedian (Khan), Best Female Playback Singer (Alka Yagnik for "Hum Tum"), and Best Scene of the Year.

After six months, he spots her in a park in New York, and he makes a scene with his girlfriend Shalini, who turns out to be Rhea's childhood friend, which ends in their breakup.

He learns from Rhea's mother, Parminder "Bobby" Prakash, that Sameer has died in a car accident just after their first marriage anniversary, and he sets out to help her reclaim her positive outlook on life.

Sensing that she needs to be with a strait-laced, "boring guy," he conspires with Bobby to fix her up with his shy best friend, Mihir Vora.

[9] Kohli later said he wanted to make a remake and added, "We approached the studio, which had the rights of the Hollywood film.

[27][28] Hum Tum had managed to create a strong buzz before pre-release due to its songs, unusual and interesting promos and fresh style of narrative.

[29] Saif Ali Khan was introduced as Karan on the TV series Jassi Jaissi Koi Nahin.

That year, India Today also featured Hum Tum's pictures as its cover on a story titled "Bollywood's blockbuster summer".

[33] While the lyrics of all the songs were penned by Prasoon Joshi, the vocals performed by Shaan, Alka Yagnik, Sonu Nigam, Sadhana Sargam, Babul Supriyo, Udit Narayan, Juggy D and Veronica Mehta.

The lead actors Saif Ali Khan and Rani Mukerji lent their voice in the song "Ladki Kyon".

This tune was reused in Kunal Kohli's next film, Fanaa (2006), in the songs "Chand Sifarish" and, more noticeably, "Chanda Chamke".

[36] Featured in the film (but not included in the album) is a cover of the song "Main Shayar To Nahin", performed by Shailendra Singh and Shaan, who supply vocals for Rishi Kapoor and Saif Ali Khan, respectively.

Jatin-Lalit were nominated for the Best Music Director at the 50th Filmfare Awards, where Yagnik won Best Female Playback Singer for "Hum Tum".

[38] Taran Adarsh of Bollywood Hungama stated, "Jatin-Lalit's music is amongst the high points of the enterprise.

"[39] Jay Mamtora of BBC noted, "Jatin-Lalit's music has a 'been there heard that quality' about it but a couple of the tracks are undeniably catchy.

He added, "On the whole, Hum Tum is a decent fare, topped with captivating performances and mesmerising music.

"[47] Jay Mamtora of BBC stated, "Hum Tum runs on a simple premise and an extremely thin plot.

"[40] Kaveree Bazmai of India Today stated, "The witty exchanges don't ring false, the emotional pitch in the melodramatic parts is just right and the cameos are succulent.

"[48] Archana Vora of NDTV noted that most of the film "seems borrowed from the Yash Chopra school of romance (Dry leaves & chiffon) or even better from When Harry Met Sally...," and wrote that Mukerji was completely overshadowed by the "very savvy and sassy Saif.

"[49] Derek Elley of Variety wrote, "this Westernized tale of mismatched friends who just can't fess up to their real feelings is a couple of notches below the Chopra par, with so-so dialogue and lack of strong chemistry between leads Khan and Rani Mukherjee.

"[50] Chitra Mahesh of The Hindu stated, "Hum Tum is one of those films where you would walk out with a broad smile on your face!

The film with direction, dialogue and story by Kunal Kohli, is extremely suave and incredibly charming.

[7] Namrata Joshi of Outlook India said that Hum Tum is a conversational film that comes riding on some witty lines and starry performances.

She added, "Perhaps it's to do with Saif's easy domination of every possible frame and Rani always seems to be reacting to a situation than taking an initiative.

[5][1][53] Hum Tum was a major success at the box office, with a gross of ₹ 432.2 million, and became the sixth highest-grossing film of the year.

Zee News stated, "Hum Tum set a benchmark and created a new genre of romantic comedy for Bollywood.

[72][73][74] Khan and Mukerji were named in Bollywood Hungama's list of the top 10 best romantic couples of the decade.

For a girl to actually walk away from a man and break stereotypes and notions of how a woman should react, it was new but it was also much needed to show in cinema.