Once, my girlfriend and I were eating lunch together and I got some sauce on my face.
So she leans over and uh...licks it off.

Me: ...What was that?
Her: I don't know actually. I always read about it being done in fanfics...

And now that I think about it, what is it with people in romantic stories licking their significant other's face when they have food on their face? It's rather unsanitary. That's what napkins are for!

Though, I told her I wouldn't mind her licking me again later...