Austisic!Peter and MJ. MJ knows Peter's autistic because of all the subtle things he does. Like, she's super observant and stuff so she knows when he's getting overstimulated or when he needs something to stim with. She doesn't mention it, but she has a shit ton of stim toys and super soft pieces of fabric in her bag (under all the books to kinda hide them). I love the idea that she knows he's Spiderman and she always gives Spider-Man something to stim with if she sees him.