I watched the episode a few minutes ago and I absolutely loved it!
I loved the Cassie one liners, especially "Please, do you own a shirt?" and the Harry Potter one.
I really enjoy this Cassie/Adam/Diana triangle. I usually get bored from love triangles easily but I'm really enjoying this one. Though I think that Adam and Diana are cute together, I have to admit that I'm shipping Adam and Cassie more.