"To Catch A Spider" (may have been called To Kill A Spider) is a Spider-Man/Daredevil story that I last remember seeing on Dreamwidth, maybe? It involves Peter coming over to Matthew Murdock's apartment in the middle of a rainy night, upset over a breakup with MJ and they have sex. The story follows their tumultuous navigation of their new relationship and culminates in Peter being kidnapped by Bullseye in front of his classroom (he's a teacher) and "killed" as Spider-Man. Any help would be awesome!
FOUND - It's Red, by Arachnophilia
https://www.fanfiction.net/s/4484864/1/Red