The food stealing just shows another nasty trait. He's very unpleasant all round. And Noky is stunning, he'd be daft to not find her attractive lolThat's it. He won't be told 'what to do' but expects everyone else to do what he wants. Controlling little git.
His creepy obsession with Noky is quite worrying imo. I think he finds her attractive but doesn't want to for..... reasons and it's bothering him. He's so immature and unpleasant he can't process those feelings rationally.