Women's Fiction: The Freedom and Fun of Writing Dialogue
An argument! It's perfect for a dialogue! What they're arguing about depends on whose point of view you're in. Try the woman's point of view first. Then turn it around and write the same scene from the man's point of view. You might have a totally different story! The eternal "he said, she said" is fun and easy to write. They can argue about anything.
A few things to remember: Stay in point of view. When you're writing from the woman's point of view, it's her story and you give her free rein. Get into her emotions, her head, heart, and gut, don't get inside the man's head, heart, and gut.
You see him and everything in the scene through her eyes only. He speaks and acts, but that's it. Then switch points of view and she can only speak and act. This is a great exercise for dialogue and point of view. In the middle of the dialogue, you can even have a flashback!
If you think you can't write dialogue, don't worry. I've never worked with anyone who can't write dialogue, only with people who think they can't. It's amazing what you learn once you free the character to say everything she or he wants to say!