Sure!

"Sure haha, why not," you tell Dave as you take the flask from his hand. After a short swig, the sweet taste of whiskey slithers down your throat. With a nearly imperceptible shudder you hand the flask back to Dave, but he caps the flask and hides it in his coat.

"Why didn't you-" you begin to ask, but Dave pulls you deeper into the dance floor. A slow song comes on, and you begin to slow dance among the happy couples.

His arms around your waist, and yours around his neck, you feel an extra warmth radiating outwards (no doubt from the whiskey). Almost like a sixth sense, Dave takes the flask out of his hidden jacket pocket, and presents it to you.