Question: What part of William Shakespeare's career did he write the story that is similar to the story in "Kuch Tum Kaho Kuch Hum Kahein"?

Context paragraphs:
Mohabbat Khawab Safar: Mohabbat Khawab Safar (Urdu: ‎ ; lit: Love, Dream, Journey), is a Hum TV drama that airs every Monday and Tuesday at 9:10pm PST.  It was first aired on Hum TV on 24 April 2017 replacing Hum TV's Kuch Na Kaho.  It stars Rabab Hashim, Sehra Afzal, Zain Mirza, Babar Khan, Mehmood Aslam

Mariyam Nafees: Mariyam Nafees is a Pakistani TV actress and model.  She is known for her debut drama serial "Diyar-e-Dil" on Hum TV as Zarminay and "Kuch Na Kaho (2016 TV series)" also on Hum TV as Tabinda.

Mohit Sehgal: Mohit Sehgal is an Indian television actor.  He is best known for his role of Samrat Shergil in the Indian television series, "Miley Jab Hum Tum" on STAR One.  He then bagged the role of Siddharth in "Mujhse Kuch Kethi Yeh Khamoshiyaan" on Star Plus in 2012 and in 2013 as Haider in "Qubool Hai" and 2015 as Somendra in Sarojini on Zee TV.  Mohit has also participated in "Nach Baliye Season 8" with Sanaya in 2017 and they made it to the Finale.  Mohit is currently seen as Ayaan Mehta in Love Ka Hai Intezaar on Star Plus.

Kuch Na Kaho (2016 TV series): Kuch Na Kaho (Urdu: ‎ ; lit: "Don't Say Anything") is a Pakistani drama serial which is based on a novel named Sabz Ruton Ka Pehla Phool by Rahat Jabeen.  This serial aired on Hum TV on 31 October 2016.  It is given Mondays and Tuesdays 9:10 pm slot.  Before this, Hatheli (TV series) was given this slot but after 8 episodes,it moved on to Wednesdays and Thursdays 9:10 pm slot giving way to Kuch Na Kaho (2016 TV series).  It stars Naveen Waqar and Emmad Irfani in leading roles.  The Serial Is Gaining Good Ratings And Popularity.

Sai Lokur: Kis Kisko Pyaar Karoon is her Bollywood debut movie along with Kapil Sharma.  She did her first movie Kuch Tum Kaho Kuch Hum Kahein as child artist in which she played the role of younger Sister of actor Fardeen Khan in 2002.  She did many movies in Marathi language.

Tum Kaho: Tum Kaho (literal English translation: "If You Say So") is a Pop Rock song by the band SYMT.  It is completely different from other Coke Studio songs as it is a new and original work.

Rati Pandey: Rati Pandey is an Indian actress and anchor.  Her well known television works include Porus, Hitler Didi, Miley Jab Hum Tum, Begusarai, Har Ghar Kuch Kehta Hai and Shaadi Street.

Kuch Tum Kaho Kuch Hum Kahein: Kuch Tum Kaho Kuch Hum Kahein (English: "You say something, I'll say something") is a 2002 Indian Hindi romance drama film directed by Ravi Shankar.  The film stars Fardeen Khan opposite debutant Richa Pallod.  It released worldwide on 28 June 2002, and opened to a mixed response from critics and public.  The story is based on two lovers who are unable to start an relationship because of their family's feud and ancient grudge.  The storyline is a remake of the Telugu movie "Kalisundam Raa", and features similarities with William Shakespeare's classical story, "Romeo and Juliet".

Hatheli (TV series): Hatheli (Urdu: ‎ ; lit:Palm), is a Pakistani television drama serial that was first aired on 27 September 2016.  It airs every Monday and Tuesday at 9:10 replacing "Khwab Saraye".  Eshal Fayyaz makes her second appearance on Hum TV after "Abro", opposite Azfar Rehman.  After airing 8 episodes, the slot of Hatheli moved to Wednesday and Thursday at 9:10pm, giving way to Kuch Na Kaho (2016 TV series) and replacing Deewana from 3 November 2016.

Romeo and Juliet: Romeo and Juliet is a tragedy written by William Shakespeare early in his career about two young star-crossed lovers whose deaths ultimately reconcile their feuding families.  It was among Shakespeare's most popular plays during his lifetime and along with "Hamlet", is one of his most frequently performed plays.  Today, the title characters are regarded as archetypal young lovers.

Supporting paragraphs: Kuch Tum Kaho Kuch Hum Kahein Romeo and Juliet
Answer: early in his career