Is Shahrukh Khan's Jab Tak Hai Jaan inspired from a novel?

The story of Shahrukh Khan's Jab Tak Hai Jaan is somewhat similar to 1951 novel, The End Of Affair, written by Graham Greene. In the novel, an upcoming writer in London meets a girl, who is a civil servant, during World War II. They both fall in love instantly but the girl refuses to leave her boring husband. Later, their apartment is bombed nearly killing the writer. After the blast, the girl leaves the writer. The writer finds out after years that the girl had made a promise to God that she would never see him again if God spared his life.

On the other hand, Jab Tak Hai Jaan tells the story of Major Samar Anand, a bomb disposal expert in the Indian Army. Samar is separated from his lady love Meera, played by Katrina Kaif because she made a promise to God. When Samar meets with an accident, Meera says to God that she will never meet Samar again if God will save his life.

Is Jab Tak Hai Jaan inspired from the novel or is it just a coincidence? Well, only God knows!