There’s nothing I love more than a good romance. If done right, I even like belligerent sexual tension. I repeat: if done right. Having two characters fight all the time isn’t cute or romantic by itself. If two people are awful to each other, that doesn’t make me root for their happiness.
I think you know where I’m going with this.
To all my fellow writers: if you want to include jealousy and bickering in your romance, that’s fine; just make sure you include that stuff after the characters have known each other for more than a day.