Better yet, don't.
The two things this romantic comedy lacks are, in large part, romance and comedy.
Enough is injected to attract the genre label and provide cuts for a convincing trailer. The remaining runtime is devoted to setting up embarrassing situations, earned or not, and attempting to laugh at the subjects thereof; for most movies I tend to wander off for the few awkward minutes this occurs, but by starting there and never letting up I'd have been rude to the audience and to my $5 expended for the iTunes rental.
Its hard to sympathize with the romantic leanings of a lecherous protagonist, a doctor whose patients would be wise to walk out upon his bedside manner. That the frumpy babe wants his hand may work out fine and special for her, but there are other romances for us to enjoy on screen. That the hot babe is hot guarantees she will not end this with the marital devotion her kind & patient heart deserves.
The remaining theatrical attributes worth considering evaluate in kind. The cinematography is perfunctory: correct, but not special. Music prolific, but borrowed. Acting, gratuitous. Cast, wasted despite laudable efforts by Jennifer Aniston and Brooklyn Decker.
It is, to wit, an Adam Sandler film.