You know what really annoys me when I read a script? Laziness. Every now and then a writer might need to take a shortcut in order to get the story going, but there are limits. I'd explain all this in greater depth, but it would take too much time.
Annnywaaay... one shortcut that almost always earns a script a PASS from me comes in the form of this simple phrase in the description: "They instantly fall in love."
I pause because I hope that 99% of you are able to tell where I'm going with this just by being presented with this evidence. Are you all at least half a rant ahead of me? Good.
For the slower kids in the class (Hi Robotard and Paul Haggis!), the reason this is lazy screenwriting is that it doesn't require any work on the part of the writer to do any of the following:
1) create believable chemistry between the characters.
2) show the growth of a romance through several stages: attraction, infatuation, and so on.
3) develop the characters and their dynamic through that growth.
4) reveal things about the characters through the ways their feelings become known. (i.e. what is it that turns them on initially? Do they try to hide their feelings from the other or do they boldly declare them? Why does this attraction exist? How do they attempt to figure out the other partner is interested in them?)
See all the great things a writer misses out on by typing "They instantly fall in love?" No, check that, see all the great things the audience misses out on through that shortcut?
Try to avoid taking the easy way out - at least when it's as blatant as this bit of corner-cutting is.
2 weeks ago