Lightknight said:
Yeah, a major component of those breathers is the characterization. He tried to show us who they were through their actions but it just didn't come across this. From my perception, Finn had known Rey for 30 minutes before they were best friends and he was all googli-eyes at her to the point of being willing to die for her. I mean, 30 minutes and you're telling someone that no one has ever looked at you like them before?
While Star Wars has always featured extraordinarily accelerated bonding (Luke freaking out over the Death of Obi-Wan, a guy he met for the first time literally THE DAY PRIOR, Han and Luke and Leia all bonding over the course of a single high-stress adventure, etc, etc) Rey and Finn do seem to get along extremely rapidly. This was a conscious choice by Abrams that he discussed in an interview. Apparently they had tremendous off-screen chemistry as friends, and he wanted to translate that into the film. He actually re-shot all of their early scenes together for that reason.
It makes SOME sense given their respective characterizations. Rey is lonely, starved for affection/family, and clearly yearns for adventure. Finn is a NEW FRIEND. Han is a FATHER FIGURE. She's like a puppy with both of them, eager to show off and get approval. Finn has spent his entire life in a repressive, dehumanizing regime. His first interaction with the effusive Poe Dameron delights him, and Rey treats him like a mysterious and exciting Resistance Fighter, and not like Stormtrooper 7,551 or whatever. He seems to imprint on everyone he meets. Like Rey, everyone is an exciting NEW FRIEND. Both Finn and Rey are like "kid" inserts without actually being kids (thank god).
Which is not to say the characterization isn't rushed...it clearly is...just that there's room inside their existing characterization to rationalize how impressionable and quick with affection they are. Conversely, you could also have made both of them bitter, reclusive and suspicious for the same reasons, but that would've made for a very different (and not very Star-Wars-y) film.