~This review is totally subjective and might seem biased since it's a genre I really like ~
If the older woman/younger man tag attracted you then you're for a good show.
The plot isn't very deep or complicated and the total run time of 90~ish minutes wouldn't allowed it much too. Instead of spending too much time on side characters and backstories the movie focused on building the relationship between the leads. Nitpicky people might find flaw in it.
The character transition of the male lead from a playful young adult to a more responsible one was necessary and which they did as the age gap was there to trouble a good ending and halfway through, the third wheel entered(or I say returned) to make things complicated. Fortunately our leads were resolute from their points.

All's well that ends well, this one definitely falls into that category.