Long, Tall Cowboy Christmas by Carolyn Brown

Nash Lamont is a man about as solitary as they come. That’s exactly why ranch life in middle-of-nowhere Happy, Texas suits him. So what the heck is he doing letting a beautiful widow and her three rambunctious children temporarily move in? Before he knows it, they’re stringing Christmas lights and decorating the tree… and he’s having the time of his life. But after everything he’s been through, Nash knows this kind of happiness doesn’t last.
Kasey Dawson thought she’d never get over the death of her husband. Nash, with his strong hands and infinite patience, is stirring something she hasn’t felt in a long time. Kasey knows the sexy cowboy isn’t telling her everything about this past, though. And she refuses to risk heartbreak all over again. But her kids have a plan of their own: Nothing will keep them from having a real family again-even if it takes a little help from Santa himself.