I trust you guys enough for this.
If Weisse is interacting with you, feel free to have him react how you see fit. Not his thought process, of course, just his words and actions. It'll help things go more fluidly, I think.
Just remember:
He comes from a rich background, so he'll speak somewhat formally. He's also quite polite, but a little stiff around the arrogant or cocky.
He's fairly shy
He's very submissive.
He talks to girls less than guys
He is a bit flinchy around strangers
If you mistake him for a girl, he'll blush and correct you, though politely.
He'll let people into his dorm, but keep an eye on them

And any other traits you think he might have or have picked up on. You don't need to wait for me to interact with you, either; if you need want to meet him, you can. I can work with it.