YAY RICH KIDS ALL RAN IN THE SAME CIRCLES! ...like yacht club. >_>
He knows Emma, yep, probably even gets along with her well enough as long as they don't talk about more than the usual pleasantries and people they know. Though they do have similar tensions with their family going as well, come to think of it.
Warren doesn't try to offend, it just...sorta happens, and once pointed out that he's sorta being a jerk about having money, he does get apologetic. One day he might even be aware he's doing it before he says something. Tabby can help by smacking him whenever he does. XD