It was Always You (destiel/sabriel highschool)

In a world where everyone is born with a soulmate, two boys, Dean Winchester and Cas Novak, are trying to deal with being paired together as soulmates when they've been friends for years before. Meanwhile, their two younger brothers, Sammy Winchester and Gabe Novak, already have a budding romance. Will Dean and Cas continue being just friends or will they become even more?