The boffin's cheeks burned faintly pink at that, and he cleared his throat before answering.

"James and I are dealing with some, what one might call, interpersonal issues," he said carefully, glancing away. "It's fine though, we're working through it with a level of maturity I'd not expected."

...Except for that part where Q had gotten drunk and vomited in James' hotel room. That part hadn't been especially mature, he supposed.