Emily Blunt, who had to drop out as Black Widow in Iron Man 2, spoke about it for the first time in an interview with MTV.com.

"It was one of [the] things that was conflicting," Blunt told MTV News about having to drop out of the superhero sequel because of a scheduling conflict with Gulliver's Travels. "So it's a shame the two of them couldn't work together. It just got complicated, so I think I had to pull out for my own sanity more than anything."

Blunt was replaced by Scarlett Johansson. Pulling out meant leaving behind the opportunity to work with co-stars such as Robert Downey Jr., Samuel L. Jackson and Mickey Rourke, as well as the chance to take part in what will surely be one of 2010's most anticipated movies.

The fate of Gulliver's is somewhat more uncertain, although that adaptation of the classic Jonathan Swift tale comes with its own pedigree. In addition to star Jack Black, the film features one of the hottest actors in comedy, Jason Segel, and will be helmed by Monsters vs. Aliens writer/director Rob Letterman.

Blunt was reluctant to dish any information about the still-secret Iron Man 2 plot—not even a hint whether Black Widow will be Stark's love interest or adversary.

"See, that's the other thing, I can't give anything away on that front," Blunt told the site. "I'm not going to say! I'm not going to say! I'm going to get someone in trouble. Look at me, I'm such a goody-two-shoes!" Iron Man 2 is slated for release in May 2010.