Googled and saw this from tumblr. I wont agree less to it.
If you don't treat your girl right, don't be mad when another guy comes along and does your job for you and wins her heart.
Every relationship goes through stages. Where and how each stage develops is ultimately up to each person. While we always hope for the best, we often can't avoid the inevitable.
Josh and Marissa are at a crossroads and their future is uncertain. Josh guides us through each stage of the relationship as it formed and as he predicts it will end up as.