Do you have “canon” companion-tav relationships?

I have a group of different tavs with their own personalities and whatnot and a companion i romance them with and they’re my “canon” couples, even when I make other characters, I think of them like a big friend group lol, in my mind this group of tavs are in the same universe. But, when I finally finished a playthrough for the first time last week, I called my sister and she was curious about not only my ending bc it was my karlach run, but also Astarion’s ending bc she not only romances Astarion every time, she’s apparently only ever picked the same ending with him?? It was funny to me because I’m over here romancing everyone in separate runs and I’ve SEEN how many different saves she has on her PlayStation alone. So I’m just curious how you guys do it!