Sienna Miller insists she's single

London, March 4 (ANI): Sienna Miller has rubbished rumours that she is in a relationship with her West End play co-star Joe Armstrong.

The actress, who is preparing for her latest role in Flare Path at the Theatre Royal Haymarket, has insisted audience members shouldn't be looking out for any real-life chemistry with Armstrong adding there was no romance between the pair.

The 'Factory Girl' star broke her silence this week on her January split with Jude Law, insisting it was "amicable and mutual".

And she admits she finds speculation she is now in a relationship with Armstrong "ridiculous".

"I'm single! Poor Joe is like, "What's going on?" the Daily Mail quoted her as telling Time Out London.

"We all find it ridiculous and laughable. I do feel very picked apart by it.

"When two people have separated and have both stated that it's amicable and mutual yet, regardless of that, it's not a nice feeling to have people talk about you behind your back and for it not to be true and for you not to be able to retaliate," she said. (ANI)