How to write a Romantic Comedy?

I guess a good romantic comedy should explore the theme of gender, relationship, sexuality and morality... and of course it should be funny and romantic.  But- , if you're going that route, you'll end up with something not very original.  Think opposite-  don't think about love story if you're writing one, treat it as an action film... you might get something interesting.  Then you go back and put the romance and comedy back in it.