Trouble cleared from his face; he smiled unconsciously and quickened his steps.

He caught the faint cool sarcasm in her tone, and smiled unconsciously at her last words.

Many that we met knew him, and all, when they saw his round, red face, smiled unconsciously.

Horton smiled unconsciously as he watched her eager, responsive face, and felt the suppressed vitality in every movement of her slender body.

She glanced over her shoulder at her pretty arms, her plump white neck reflected in the glass, and smiled unconsciously with assurance.