Lost in translation and gone with the wind: the significance of losing the address

"When she whipped out the hairbrush the slip of paper with Mr. Kapasi's address on it fluttered away in the wind.. No one but Mr. Kapasi notices. He wastched as it rose, carried higher and higher by the breeze into the tress where the monkeys now sat, solemnly observing the scene below. Mr. Kapasi observed it too, knowing that this was the picture of the Das family he would preserve forever in his mind." Pg. 166
When Mrs. Das originally requests the address this gives Mr. Kapasi hope that the romance he created in his head could be real. Leading up to this Mrs. Das had been very interested in his stories and even called his job "romantic". This combined with the fact that she didn't seem at all interested in her husband sparked the idea in his head that maybe she was interested in him. Then the big climax comes when Mrs. Das asks him for his address so she can send him the pictures. Suddenly the fantasy evolves into a full fledged romantic tale in his head. He dreams that all because of this address that they will become pen pals who discuss how unhappy they are in their relationships and will fall in love. Then all these hopes of love are gone when he sees the address fly away. The saddest part is no one even notices when it flies away except for him. This little piece of paper with his address on it sort of symbolizes this man's whole existence because it is so full of hope and promise but then is taken away and no one even sees that the opportunity is gone. Though in one way Mrs. Das losing the paper could keep a small part of his hope alive. If Mrs. Das hadn't lost the address and she hadn't written him, then his whole image of love with her would have been lost, and he would be crushed. Now at least he can hold on to the idea that maybe she still does love him and that fate simply took it away. Looked at from that point, it almost seems romantic. At least he has that small idea to hold on to.