"Will you dance, my love?" The wine River had drank that night made its warm appearance in her speech- very low, sultry tone, and slow enough to be naughty. Pair that with the devilish look in her eyes and slinky, shimmering dress, it was near impossible for the Doctor to say no.
"I always dance at weddings. And the last wedding I attended saw me too busy saving the universe for me to dance." He hadn't been drinking, for this mouth didn't seem to like any kind of alcohol.
River stood and smoothed her dress, then extended her hand. "Let's pretend it's our wedding again. Not like we know these people anyway."
The Doctor chuckled and bounced to his feet. Taking his wife's hand, he led her to the dance floor and swept her into a dancing embrace. "This beat is rather universal for a dance." He began swaying while holding her close. "There are many different types of dancing, and I accidentally invented quite a few." Suddenly he changed his stance. "I can rumba. I can tango. I can waltz. I can foxtrot. I can salsa." As he listed these he demonstrated- using recognizable tangents from each. "It's up to you." Then he whispered her name. But not River Song. Not even Melody Pond.
Her married name.
The name only he knew.
The name they shared.