I'm sorry, but without more specific details, I can't really tell you the full story. It could be about someone's personal experiences, achievements, or relationships. Maybe it's a story of self - discovery or a journey through different phases of life.
The title 'meri zindagi hai tu' (You are my life) itself suggests a story centered around a very important person or relationship in the protagonist's life. This could be what makes it interesting.
I'm not very familiar with Urdu novels similar to 'meri zindagi hai tu' specifically. But you could try asking at local Urdu bookstores or in Urdu literature forums for similar works.
It could mean 'She is not just a girl, she is my life in my school love story'. It seems to convey that the girl in the school love story is very important, like she is his whole life.
Once upon a time in school, there was a boy who was quite shy. He met a girl in the library. As time passed, they became friends and then fell in love. To him, she was not just a girl. She was his life. They studied together, shared their dreams. Their school love story was filled with innocent moments like sharing lunch, walking in the school garden. But then they had to part ways after school due to different college choices. Yet, she remained his zindagi (life) in his memories.
I can't really give a summary without more information. But it could potentially be about a person's life journey which might involve things like family, dreams, and personal growth.
In The Philadelphia Story, 'yaar' might be a local or specific term that's not widely known. Maybe it's a nickname or a word with a unique meaning within that story's setting.