Andy is very serious and has only been seen smiling once.

Her hand is very warm and she turns to smile once.

I kind of smiled every once in a while and laughed it off.

Everyone had seen her snap at him, and she hadn't smiled once during the entire set.

She smiled at them once or twice, but each time they turned their eyes away.

He never smiled once or was in any way friendly.

If he smiled at you once, you'd be his friend.

His young face looked to her as if it had never once smiled.

The guy on morning duty actually smiled once in a while.

Plus would it kill her to smile every once in a while.