I had a cheatsheet when I first started reading Homestuck fic, not gonna lie. But after a while it starts making a lot of sense? Because they're weird names for relationships that actually happen - Wilson is House's moirail in canon (though I ship them romantically) and Audrey Parker canonically auspistices for Nathan Wuornos and Duke Crocker on Haven. It's kind of awesome to have a segment of fandom where all of those relationships are ships, instead of just the sexual ones. So I can say that I want Murphy and Harry to be moirails forever, and it's read/treated as just as important/valid as if I'd said I want them to get married and have babies. Because the big hope for trolls is that there is, in fact, a One True Love, but also a One True Friend, a One True Voice of Reason/One True Useful Irritant, and a One True Frenemy.