Passing Notes With Boys by InLoveWithYourTeeth
Summary: Castiel is the new student in the senior class of Lawrence High School. When a dirty note zooms across his desk, the last thing he thinks is that he'll fall for its smirking sender. As it turns out, however, Dean Winchester is more than a pretty face with his mind in the gutter and a insatiable drive to get closer to Cas.But after a lifetime of constantly moving for his father's work, Castiel is accustomed to only tenuous, temporary friendships. And Dean may seem ever playful and carefree, but his walls are built up even higher than Cas's.
Comments: 9/10 sweet high school AU. I like how it’s realistic that they didn’t stay together when real life caught up with them, but I do like how they eventually came together again. Of course, marrying your first love isn’t realistic, but this is still so sweet. My favourite part is where Dean says it’s not fate, it’s free will.
