I'm bored so I'm listing down all the relationships Ryland Grace has and my interpretation of the canon
Rocky: Symbiotic relationship, do not separate, if you do one starts crying and the others starts fighting. Probably "kissed" once just to see. Rocky thought it was disgusting and Grace cackled.
Adrian: Friends through Rocky, sometimes they'll hang out and talk about science or sci fi Earth media, but other than they're probably pretty neutral on a day to day basis. See's Ryland more like a weird fucking horse they accidentally adopted that can also speak and have philosophical opinions.
Eva Stratt: Pre operation "get rid of that guy," autism 4 autism friendship. They've definitely stared deeply into each other's eyes just to go "We should play Mario Kart" and then fall into the most insane infodump ever. Post operation "get rid of that guy," Eva stared at the spot in the sky where the Hail Mary was launched for hours, probably days after, every chance between saving the world. She forgets to eat because of it before she simply tears out and forces herself back into work because people are dying and she doesn't have time to mourn. She lets herself cry over three decades later when the astrophage crisis is over. She's an old woman, she just escaped jail, and she's on her knees infront of Shapiro and Dubois' graves because they're the only ones with graves, sobbing that they did it. They won.
Carl: They kissed at least once. This is canon to me. Did it lead anywhere? Probably not, Grace is still aroace canon to me. Like "What was that for?" "I don't know, we made astrobaby, saw it in a movie." "Okay." "Let's not do that again." "Agreed." And then they name the astrobaby together and Grace credits Carl with the hypothesis in the paper he writes on it. Post launch, it's been a week since he saw Grace pinned and sedated, he barely talks, he hasn't smiled at all. He goes to his room at the end of the day, right after seeing Hail Mary take off. He knows Grace was on there and he knows what got him there. Carl breaks down, and cries himself to sleep. That was his friend, and the last thing he saw was him standing over him.
Yao: The man seems like the type to pat people on the head. Everyone. You've done a good job? You get a pat. Grace is forever confused but also feels strangely cared for
Ilyukhina: She's definitely sent Grace fanfiction. Of what? I don't know. But she has, trust. Probably tried to offer Grace her own ADHD meds.
Dubois: They've probably had some sort of informal battle for who knows the most science stuff. They've definitely infodumped to eachother, thought Dubois is more of the "pulls out a slideshow for every topic" he likes and Grace is more "Okay I'm going to tell you but it will have 17bajillion tangents, let's get started." Autism v autism. Maybe he has like one really niche interest he goes feral over and infodumps more insanely, but he DEFINITELY also has a slideshow for that. Has probably willingly read Ilyukhina's fanfiction recommendations.
Shapiro: Yet another yapper. Shapiro, Grace, Dubois yapping circle, science geeks 🔛🔝. She yaps the same as Grace, 17bajillion tangents and 0 breaks. They bond over this.
I probably missed someone but I don't rembemebr...