Be careful, this post mostly discusses Tony and Pepper's relationship in Iron Man 3, however it IS a review of the movie. While it is not intended to contain spoilers, if you have not seen the movie yet you may not want to read this review before seeing it.
SOME SPOILERS AHEAD! Read with caution!
No one ever said being a superhero’s girlfriend was easy.
Even Lois Lane, laboring under the mystifying delusion that her alien crush and her identical-except-for-corrective-lenses, never-seen-in-the-same-room colleague were actually separate people, must have realized that dating Superman would be a tougher gig than dating regular ol’ Clark Kent. The constant cries for help always interrupting dinner, the supervillains with their axes (and, indeed, death rays) to grind, the secrecy, the power disparity, the thinking he’s dead on a regular basis, the always coming in second to the Greater Good. Ugh.
But in Iron Man 3, Pepper Potts (Gwyneth Paltrow) has even more to deal with. Not only is her man traumatized following the harrowing events in New York (see: The Avengers), but he’s also, well, Tony Stark (Robert Downey, Jr.), former playboy of the Western World and unapologetically arrogant erratic genius. That would be difficult to deal with even without the fact that he just played a significant role in saving the planet from space aliens eager to destroy us all.
[Being with Genius, Billionaire, Playboy, Philanthropists Ain't Easy...]