ok i usually hate humanstuck and i usually don't age the characters up but in this they're definitely human and aged up because this relies heavily on the context of certain cultural norms which are not part of troll society, also assume everyone is pansexual panromantic unless otherwise stated
sollux is married to aradia and she's the love of his life and they live together and have five kids together (more on that later) and they're super romantic and he's a huge dork around her. they have sex only occasionally, but they cuddle a lot and sleep in the same bed and are all super cute. he's also in a relationship with terezi and they interact at work a lot and are basically the snarky terrors of their workplace. he's also sorta in a relationship with feferi.
aradia is asexual but not sex-repulsed and occasionally has sex with sollux. she also has these semi-sexual kinks like she likes to watch sollux masturbate but she doesn't really get off on it, and she has a romantic relationship with terezi where they do pain-kink stuff. they also have 'adventures' and do all sorts of really goofy stuff together. she's super besties with feferi who's around their house *a lot*.
the first kid aradia and sollux had was a half-accident, like they weren't really trying for a kid but they knew it wouldn't be the end of the world either so they went ahead and had unprotected pivsex and a kid got conceived and then sollux took some time off to take care of the kid and discovered that he really really liked being a dad, and then there was this kid who aradia met who was trying to escape neglectful parents and they decided to become the kids foster parents while the legal procedures were being sorted out and then they ended up adopting her and then things kind of snowballed from there and now they have two bio kids and three adopted kids.
feferi is super rich to the point where her 'job' is more like 'do a few nominal things and live off your investments' and she uses all her free time to hang out with aradia and sollux's kids because she absolutely adores them. it's gotten to the point where sollux and aradia sat down with her and decided to include her in parenting responsibilities and decisions, so they're really "aradia, sollux, and feferi's kids" but because of legal matters and outside stigma they act like they're just aradia and sollux's. but the kids talk about how they have "a mom, a dad, and a fef" and it's super adorable
terezi has a super intense job which she loves a lot. she also loves karkat a lot and they're really 'in love' and karkat's always doing romantic stuff for her and she does romantic stuff back because she knows he loves it. they don't have kids even though karkat kind of wants to because terezi worries that she wouldn't have time to take proper care of them. terezi's also in a relationship with sollux, and they sometimes have sex and sometimes have threesomes with karkat. terezi's super kinky and has a high sex drive and has tons of fun in bed. she's also in a relationship with dave and sleeps over at him&jade's house a lot. she has a romantic relationship with aradia that often includes cuddling and sometimes kissing with clothes on
karkat lives with terezi and they love each other a lot. they're not married because 'we don't need the government to tell us we love each other' kind of mentality but they share finances and make big life decisions with regard to each other and stuff. he really wants kids so he's kinda an uncle to the arasolfef kids. he still has an angry friendship with sollux, they don't usually sleep together unless terezi's in between them, and sollux tries really hard to help karkat not be so awful at coding. karkat became good friends with nepeta and sometimes they go out together and sometimes they kiss but nothing below the waist because he's not really into her like that and she respects that. he and dave go over to each other's houses to play video games and make fools of themselves and sometimes they frick
dave dated terezi a long time ago but never really 'felt it' and then he and jade fell in love and dated for a long time without him having any pants feelings for her but then one day he suddenly started being attracted to her and he doesn't know what happened and then a while later he fell for terezi again and much later he started having feelings for karkat and he's probably demisexual but he doesn't put a label on it. he lives with jade in a big apartment and john also lives there some of the time.
john is everyone's friend and he's aromantic heterosexual and technically lives at dave and jade's house but really he sleeps over at other people's houses half the time and he has a lot of sex with roxy in particular and also jade. his job is such that he doesn't have to be there in person so he takes his computer from place to place and spends lots of his income on transportation
jade has been living with dave for a long time and she's been in love with him for a long time and she wanted to frick with him so badly but he wasn't into that so they kept their relationship non-sexual but then one day he was like 'yeah i think i'm into this' and jade asked him a whole bunch of times if he was really sure and he said yes and then yeah fill in the details yourself. she also loves her job and spends a lot of time at that.
roxy isn't in any romantic relationships per se right now. she and calliope consider themselves just friends but they're clearly the most important people in each other's lives. she and john have a thing where they hang out a lot and bang sometimes but mostly she visits callie a lot and lives by herself with lots and lots of cats
calliope is aro ace and roxy is her best friend to the point of making life decisions together, etc. she's sex-repulsed but wants kids so she adopted an embryo and carried the kid to term, it was done legally under both her and roxy's name but the kid is callie's kid even though roxy helps out with childcare stuff
and group cuddles happen all the time, please don't be misled by the fact that i only described dyads and sometimes triads. sometimes a whole bunch of them get together in a group and make blanket forts and watch movies and mess up each other's hair and de-stress and eat ice cream and there is so much love and it's amazing