Well, he did give him a thank you picture and does treat him differently than he treats the other humans (complete loathing), so that's something at least. Handing over a present and 'fangirling' hard over someone are some steps above merely tolerating a person. They have an interesting dynamic. Also, Dirk has talked so much with Caliborn that there is probably going to be follow-up of some fashion in the story itself.
Anyway, fandom is all about reinterpreting things. Fandom is going to have different interpretations of his dialogue with Dirk because there are a few different way it can be interpreted.
Regarding what people ship, people pair what they want to pair. Any murderer will continue to paired. Nothing stops shipping. Also, shipping isn't instrinsically linked to canon, people will ship what they want to regardless of canon events because they find it interesting.
Anyway, fandom is all about reinterpreting things. Fandom is going to have different interpretations of his dialogue with Dirk because there are a few different way it can be interpreted.
Regarding what people ship, people pair what they want to pair. Any murderer will continue to paired. Nothing stops shipping. Also, shipping isn't instrinsically linked to canon, people will ship what they want to regardless of canon events because they find it interesting.