People were taking the Ellith heart bit to mean that Korpus is getting cucked when really I think it's meant to show how he longs for connection and to explore these feelings that have awakened after only knowing Ellith for a short time rather than being stuck in his Kismesissitude that he despises with Renity.

I see it as the potential that he'll be with Ellith even more clearly rather than him getting cucked like everyone else memes. So what if Mallum is there too? I love them all and he hasn't shown any distaste for a caste other than the generic disdain for lowbloods that quickly melted once he spent time with Ellith so that'll probably also work for Mallum.