One of them things I really liked about the first Iron Man was there was a romance and flirting, but it never took over the plot. Tony and Pepper didn't EVEN kiss. It might have been a first in a superhero movie.
They started to become annoying in IM2, but got better again in Avengers.
I just don't want the romance to ruin the movie like Spider-Man 3 which had a tedious love triangle.
What's the problem with romance and kissing?