plagiarized?

Rating: 6/10 (18 April 2011)

the movie is very good, but it seems to be a rip-off from 2005 Indian flick called "maine pyar kyun kiya" (why did I fall in love?). All the major characters and elements of the movie are identical. Are both the movies a copy of another, a third, unknown movies? here's the IMDb link for the Indian movie - http://www.imdb.com/title/tt0451803/
"Samir is a very successful doctor. However, one day, he meets Sonia, a beautiful young woman and Samir is smitten. When she learns of his 'wife', she wants to meet her -- and Samir introduces Naina, as well as her niece and nephew, as his wife and children. Samir then arranges a fake divorce from a fake wife with the help of his best friend, lawyer Vicky who, despite having a steady girlfriend, frequently flirts with Naina. To complicate things further, Samir's mother suddenly appears and doesn't want her son get divorced from Naina (when he isn't married to her in the first place)...