I'm looking for this fic that I vaguely remember. I recall Jensen going to a party that Justin shows up to, and Justin acting like a possessive meathead (I don't remember if they were already broken up at the time). Their friends say Jen needs to cut ties with Justin. Long story short, everyone turns on Justin because he's being a total control freak, douche, and is simply harassing/stalking Jen at this point. Everyone except Steve. Steve points out that Justin needs to cut back on the caveman act, but he doesn't believe Justin's a horrible person/can redeem himself.

Could have been a college AU.

They have a lot of reservations, but eventually, Steve/Justin reveal their relationship to their friends. Any ideas?

ETA: FOUND. It's College!Verse by aleia.