Probably my number 1 pet peeve with stories is that the main focus on the plot becomes lust love. Meaning like the whole point of the plot isn't going from point A to point B, it's getting the two main characters together. Twilight, for example, could not hold my attention because it was all about Jacob vs Edward. It's also why I generally don't like the second books in trilogies either because they're all about romantic tension. Now, I'll be the first to admit that I do like a little romance involved in a story. That's always good for me and I tend to include it in my own, but it's not like the main focus of the story for me. Plot first then romance. Occasionally I'll have like a little romance involved in part of the plot, like as a plot twist, but the whole plot usually isn't centered around them, if that makes sense. I try not to overdose on the romance because even though I enjoy having some, I don't like having a lot.