THIS! This was it! Thank you so much.
It didn't pop up when I had tried a similar route before so I had ignored the possibility it was there in class.
No not yet. I tried a lot of options and still can't find it. I think it has to be a certain few options together near the start (as the first two are from the library scene, sitting on his lap and ignoring him which he ends up beat up). I thought it must be the 'bribe' option but none of them worked.
Was replaying this again and found a bug. Following the walkthrough so I know I'm doing things right. Trying for the Sans route, I picked astrophysics and legit can't get past the tenth floor. No matter what it makes me go back and call the cops. (Literally did all the same things but with biology and it worked fine.)
"The friendship / non romantic route is currently unavailable.
Route will be added after Papyrus' route!
Routes currently available: Dr. Sans Gaster & Dr. Wingding Gaster."
Wait did I just get this cause I didn't cycle to have a crush on Paps? I did both WD and Sans since it said their routes were in but OMG that's annoying if so.
Nope I keep getting it so I'm guessing I'm doing something wrong. Time to click way too much and check every option.
After playing this like a dozen times, I finally realized what was confusing me!
Is there a way to make who is texting a bit clearer? I can really only see the green and somewhat red boxes so I keep losing the conversation.
It's also doing the same thing Siren Call is doing where the save window is too big for the screen.