The question draws a chuckle out of River as well, but her hand drops from the Doctor's face, seeking out her hand instead. There's a quiet comfort in the contact, the familiarity, and in simply being able to feel the hand in hers.

"It's a fair question," she murmurs, "You know, I even married myself once."

She's stalling, and it's obvious. Of course, the Doctor always has had a tendency to miss the obvious. Sighing, River squeezes her wife's hand.

"Jack was a little different, Sweetie." There's a brief pause before she concedes, "Maybe not the marriage. But the relationship."