His mouth curled to one side as he considered this turn of events in a new light.

Her mouth curled to one side, indicating that she didn't quite believe me.

His mouth curled into a smile and he kissed me again.

He felt the corners of his mouth curling into a smile.

His mouth curled in a sneer at the cold sun.

Finally, his mouth curled upward, but the expression was not quite a smile.

He looked at me for a moment, one corner of his mouth curling slightly upward.

For the first time in months, Logan felt his mouth curl into a grin.

Smith's mouth curled into a grim curve as he watched.

Niall must have had the same thought, for his beautiful mouth curled at one corner.