[Yes, yes, message received, and he doesn't mind starting. Sebastian thoughtfully strokes his chin - what do they have in common? Not hobbies, certainly: Sebastian only does sex and taverns for information gathering purposes.]
I don't believe we will find much common ground in our respective professions. [I mean, it's not like they're both enemy-eliminators for hire or anything. Sebastian's thoughts automatically go towards work, what a surprise.]
We are both involved with upperclassmen? Differently so, of course. [Sebastian isn't dating Ciel; Bull presumably doesn't want to eat Dorian.]