Formulaic approaches to this genre have become so self-parodying that a fresh and imaginative take on your story is mandatory.
I've been arguing this basic idea for as long as I've been writing about and teaching romantic comedy, and here's a really good and funny trailer for an upcoming movie that makes the case more eloquently than more verbiage on the subject would:
When the basic elements in a formulaic rom-com (or zom-com, i.e. zombie romantic comedy) are so self-evident that they can be used for a trailer where the audience is on the joke, a priori...
Put your imagination cap on when you sit down at that keyboard, will you? Please? Thank you.