Really messing up

"I can't believe what you've done," she said, her voice shaking with a mix of anger and disbelief. "Do you have any idea how serious this is?"

He hung his head, unable to meet her eyes. "I wasn't thinking straight. I've really messed up, haven't I?"

She shook her head. "There's no going back from this. I mean, who spoils the ending of the season finale?”