She keeps fantasazing about the guy in the photo, she even writes an album with their future moments. Her grandmother gives her a hearted necklace when she is about to travel. When she arrives, she finds out the truth and is very embarassed, but the family treats her really well. She is completely in love with her fiance's brother(the guy on the photo) but he has a girlfriend already, her name starts with C(I think it's Connie).
I think it's in Australia because there is a moment where they see kangaroos, but I don't remember if it was in a zoo...The characters had Italian heritage, so I guess there was a Paolo, a Francesca, but I don't remember.
At the end she decides she is not getting married to her real fiancé. When she is getting in the ship to go away, the guy she loves(the fiancé's brother) shouts her name and they stay together. We see them some years later with their baby. reunited with the guy's family.
Please, I've been trying to find it for SEVEN years already! I have asked every single movie-lover I know, and I still haven't found that one!!