Maybe not argumentativeness, but denial in a bratty way--yes!

CBT T I think is on to me and knows I feel attracted to him.
Sometimes he will mention…"Nice shirt, is that new?"

Nope. I've always had this.

"New 'do! Nice haircut. That must be new."

No I just flipped my hair to the left instead of right.

"Nice shoes…where did you get them"

I haven't worn them in a while so it was time to bring them out.

All subtle ways of asking "Do you dress better for sessions than you regularly do?"

NUH - UH!!! Don't flatter yourself. You are imagining things
LALALALA I CAN"T HEAR YOU!