I think that's a problem with the show's time-skips and relegating stuff to the tie-in comic because some major DickxBabs content was in the comic before we jumped to it in the show.
I don't think any adaption is just about adapting old stories so much as some relationships are important to the characters so you expect that to be reflected in adaptions so new audiences get to see that. If the characters are being depicted as themselves and in-character you would expect them to naturally gravitate to the characters they're associated with.