If you haven't seen Iron Man Three yet this might get a little spoiler-ey, so GO SEE IT NOW! You won't be disappointed.
Director and co-writer Shane Black was on a podcast and dropped the bomb that while Pepper was captured by Aldridge, they did the nasty AND filmed it! Shane explains:
“Pepper, in one draft, slept with [Aldrich] Killian because he was so
pheromonially enhanced with this extremis that she couldn’t resist him and she
was angry with Tony and so she sleeps with Killian and then he makes a sex tape
and broadcasts it in Home Depot.”
Personally, I would have really liked to see that. VERY much so.