How to Use "ruefully" with Example Sentences

1. Mans looked ruefully at his bottle of champagne .
2. She ruefully contemplated the end of her marriage .
3. " We should have abandoned labour 's spending plans sooner , " he says ruefully .
4. She smiled at him ruefully and came into his arms for a kiss .
5. " No one came to my rescue , " he said ruefully . " They were afraid I 'd blame them for my fall . "