London: Oscar winning actress Gwyneth Paltrow said her scenes with Robert Downey Jr. in "Iron Man" were "sexually charged".

Thesun.co.uk reports that Paltrow revealed she enjoyed the on screen chemistry with Downey Jr., who plays the lead character in "Iron Man".

She said: "Robert kept me on my toes and kept our on screen relationship sexually charged. Sometimes I have had to work with people I have had zero chemistry with and it's like pulling teeth. Because sometimes it's just not there and when it is there, it's like flying. It feels like you can do anything, and when it's not there it's a struggle. I've had that quite a few times."

Paltrow, who is married to British rocker Chris Martin of Coldplay and lives in Britain, was thrilled at the chance to work in a blockbuster after having starred in a few independent movies lately.