Sometimes. T and I have been exploring the idea of the different parts of me. Teenager me is often very petulant, and it comes out in session at times. My T will point out when the teenager is in the room, but he doesn't shame me for it at all. In fact, he will encourage it, as I actively repress that side of myself.

It makes me sad to hear that your ExT said what they did. There are needs you're having met by acting in that way. Sure, you aren't going to always get what you want by petulance, but that doesn't make what you're doing "wrong."