Christmas at Carriage Hill by Carla Neggers

Image linked from Goodreads

Designer Alexandra Rankin Hunt is going to Knights Bridge, Massachusetts to bring Olivia Frost her wedding gown. The fact that she gets to simultaneously avoid Ian Mabry is just a bonus. The handsome RAF pilot was nothing more than a fling, no matter what her heart says.
Except... Ian is in Knights Bridge when she gets there. And he seems
pretty serious about making sure that her heart wins out over her head...
A lovely addition to the Swift River Valley series.