"You..” he sighed, "he..." Sebastian eventually just rolled his eyes, "Well, you know," he murmured with a cackle.

It's hard for him to just be sincere about his... strange emotions. Which, speaking plainly, are just a bit jealous.

"I mean, I see the way he looks at you. And you see it too, unless you’re suddenly blind or whatever" he snickers and shrugs. "He's annoying. Like.. Merlin's beard. I mean, he's a Weasley. What can you take from him?" he looks away awkwardly. What is he even saying?