7.2 stars.
As stated in many previous reviews, this is the same story done with a different slant. Instead of city girl meets outdoors guy at a national park, it's a city and country fitness girl meets celebrity guy at a wellness/fitness resort in the woods with a lake. All Hallmark did here was pick one of the half dozen usual plots, and then tweak the background of the woman and the man just a little. There is literally nothing more to the recipe than that. What makes "Warming up to You" special is the pooch they wrapped on the man to make him look like he's got belly fat. It's the most obnoxious attempt I've seen in a while. He's thin, muscular, wiry, with a jutting pouch just above the waistline, it looks like a concealed fanny pack. Why waste our time with this ridiculousness? There are a million other ways to make a person seem out of shape.
The romance is very slow, and the title of the film is the perfect description of the theme which is about how it takes her several weeks to warm up to him. Most of this story has been done in a hundred different ways in other films and this one is not original by any means (except for the fake belly), but the acting is heartwarming and the chemistry is good.