I'm trying to track down a fic I have only vague memories of. I believe the Js got together in high school, but then someone - maybe Jared's brother Jeff? - found out and threatened Jensen so he took off without a word to Jared. I remember Jared falling apart when Jensen didn't show up for his graduation. Jared gets kind of wild, drinking and smoking pot. I think it's several years before they reconnect, and Jeff helps Jared find Jensen again in the end. Ringing any bells?

ETA: Found! It's For The Love Of Jensen Ackles, link to Mediafire for pdf in comments. Thanks so much all!
Summary: The prompt: A J2 version of The Ugly Duckling. Jensen is the fat kid at school and Jared either bullies him/is his only friend, but because he's younger he doesn't stand up to the bullies. The boys lose touch but meet again in college where Jensen has lost the weight, but is still very self-conscious and shy. Feelings ensue and they go back home to visit Jensen's family/friend and meet up with the bullies