Remus was in too much of a maudlin mood to do anything besides mope and be depressed over his current situation. Hell, at this point, he was unsure if he could even be controlled with Padfoot and Prongs. "I'd like to think I would too. But... one wrong move..."
One wrong move I'll hurt you or do the one thing I swore I would never do.
"I've controlled it well," Remus said softly. "If I ever lashed out... I could never forgive myself if I hurt you." He lifted their intertwined hands and kissed the back of her hand. "I may not have crossed the line, but what if I do?"