The film uses a play on words, with the girl she bumps into on the beach. He name is Faight, this is a homophone, which relates to how they met on a beach at a part faight had never been before.
We see the antagonist Josh, in a whole 360 medium close up shot, showing us the nothingness around him, implying his complete loneliness, how he has nobody there for him.
Shown through both body language and facial expression, which are both empty drained and slumped. Josh also feels left out, because of the representation of age, and that everyone in his school is having sex and always enjoying themselves, he feels under pressure that he isn't having the same enjoyment as they are, which is worsening his depressive state.
Even when faight did trip over him, he had very little emotion, and didn't even apologies or his actions, which also suggest his lack of feeling and anger from previous events that day. Josh then begins to wonder whether this was really fate. They begin talking and start to relate in many ways, as well as getting along.
The conversation then gets much more smiley, showing the effect of each other on themselves, and their sudden change in emotion.
Using the beach as a setting to imply freedom, contradicts what is inevitable as they seem to come closer than before. The change of music to a non-diagetic upbeat music which also highlights the change in attitude of both the male and female, as well as the time shift, which also implies the saying 'time fly's when your having fun'.