Though happily married to 
Iron Man 2 producer 
Susan Levin, apparently actor 
Robert Downey, Jr. is in top form when surrounded by his leading ladies. Actress 
Gwyneth Paltrow said:
"When both Scarlett [Johansson] and I were both on set he was really buzzing. He loves being [the] center of attention and having his girls around him."
Paltrow returns as Pepper Potts, assistant and love interest to RDJ's Tony Stark, aka Iron Man.  Johansson joins the cast as Natasha Romanoff, aka The Black Widow, agent of S.H.I.E.L.D. and potential love interest for Stark.  
Iron Man 2 opens May 7th!