Percy sighed, because this was such a waste of time. "Does it really matter, Cass? We can discuss this until we're blue in the face, but it doesn't change the fact that neither of us thought that we'd leave the other and both thought that we'd break up. We were both right in a way; we only got the timing wrong."
Breaking up shouldn't be so difficult; it certainly hadn't been with Penny, but then he should have known better, because Cass never made things easy and he never understand the word 'no' or any variation thereof. However, nothing had prepared Percy for Cass's next words.
He shook his head. "You can't do that, Cass. You love this job, you're good at it and we need all the aurors we can possibly have." He leaned down and kissed Cass's forehead. "I appreciate the offer, Cass, but you'll be miserable if you leave the department, and I can't do that."