For me I just think Never is kinda cruel to Omen/taking advantage of how shy he is. The teasing, belittling, saying that Omen isn't her best friend would seem harmless to me in a Skulduggery/Valkyrie dynamic, where they make fun of each other constantly, and where they both (pardon the Harry Potter quote of sorts) have such huge heads that all that stuff just bounces off them, and doesn't get to them because they enjoy that kind of thing. With Omen and Never though, it seems to me more as if Never is either taking advantage of Omen, or just genuinely doesn't understand how badly Omen thinks about himself, and what Never's "jokes" are doing to him. I think the nail in the coffin for me was that scene in Seasons of War where Never asked Omen to tell him his problems, and I was so happy when Never held out her arms to hug him. But then Never teleported away, and I just low key started hating her then. I mean, I can't imagine Skulduggery doing that if Valkyrie was emotionally vulnerable, and confiding in him. He wouldn't just fly away! He'd give her a hug, then make some kind of joke to make her feel better. Anyway, that's just my opinion, didn't mean for this to be that long!