Not sure why there'd be any formatting issues (there are), but if you've written this in Celtx, you should just be able to go to the "TypeSet/PDF" bottom tab and select "Save PDF" at the top. The formatting should be fine. The formatting of this document makes it difficult to read.
Anyway, some quick points...
"He was born into a wealthy family and earned a large amount of money after having graduated from an Ivy League college."
"She is attractive and also went to the same Ivy League college as he did. However, she was not born into money like him and instead got into college on a scholarship."
You don't write this sort of thing in a screenplay. You can't show this on screen, so it doesn't matter. If you want to show it, perhaps by showing us a framed certificate on the wall, write that in the action line. Also, tell us about the house, you could easily convey the characters wealth with a quick description of the house.
(she pauses, as if trying to form the right words from a thought she is grappling with in her head)
(looking at her, his expression is not one of shock or sorrow, it is simply empty)
You've got a lot of detail here in these parenthesis. You probably want to put things like this into the lines of action. In a correctly formatted screenplay, parenthesis like these would probably take up half a page!
I like some of your dialogue, I can imagine these people saying these things. The trouble with the whole thing is that it doesn't go anywhere. It's not a story. It's a scene. It feels like a small part of a bigger picture. You've given us two people talking, that's it. I know nothing about these people, so I don't really care about them. They're splitting up? So what?
I think this is a good starting point for you to build a bigger story around, you just need to give us a reason to care about these people.
