Why is Nayanthara acting intimately with Arya?

When Nayanthara was very busy in her fist innings, Arya wanted to somehow pair with her. His desire was fulfilled through the film Boss Engira Baskaran directed by Rajesh. Acting of Arya and Nayanthara in this film was much spoken about.     They have once again joined hands in the film Raja Rani.  Both of them have acted very intimately in this film than in their earlier film. When asked Nayanthara that why she is acting so intimately with Arya than any other heroes, she said, “ As far as cinema concerned, only the story decides that how we should act. Arya is my good friend.    We have a good understanding. Because of this, when we act we get closer without our knowledge.”