Mistletoe Magic by Amanda Siegrist

Theresa might not make the best pot of coffee in town, but people still flock to the diner for a cup, even Officer Crowl, who rarely displays a smile since his fiancé died. She’ll never be able to win his heart, but it’s hard to resist him, especially when he kisses her under the mistletoe. Well, on the cheek, but that has to count for something…right?
Staying busy keeps Officer Aiden Crowl sane. Because when he’s idle or alone, he thinks, and nothing good comes from that. Everyone thinks he was the perfect man. They think he’s broken because she’s gone. He is, just not for the reason they believe. Every time he walks into the diner, one sweet smile from Theresa erases some of the pain. He should stay away from her. Far away. But what is he supposed to do when they’re standing under a mistletoe? Kiss her, of course.