I'm looking for this specific J2 story but I can't locate it. Maybe someone can help. This is what I remember about it:

Jensen and Jared are together, but then Jensen thinks Jared betrayed him in some way (I don't remember the circumstances, but I think he thinks Jared cheated on him). He leaves for college, not knowing that Jared is innocent and waiting to be able to meet up with him in college. When Jared follows him to college several years later, Jensen has become an asshole player who only has one night stands. When Jared finds him again, Jensen sleeps with him to get revenge and treats him badly afterwards. He somehow finds out that Jared did not betray him and he feels bad that he treated Jared so badly - especially when he discovers that it was Jared's first time because he had waited for him.

I know it sounds convoluted because I don't remember a lot of details, but hopefully it's enough to jog someone's memory.