Daniel Radcliffe is spotted stepping out with a mystery brunette amid rumours he's dating co-star Erin Darke

PUBLISHED: 18:17 EST, 26 January 2013 | UPDATED: 18:22 EST, 26 January 2013

He's rumoured to be dating his Kill Your Darlings co-star Erin Darke but it seems this now may not be the case as Daniel Radcliffe was spotted with another mystery brunette on Friday.

Harry Potter star Daniel, 23, who split from Rosie Coker in October after a two year relationship, is thought to have worked his magic on brunette Erin because of the character he plays in the new flick - controversial gay poet Allen Ginsberg.

But he opted to spend some quality time with a different brunette as he enjoyed a burger date in Fulham, London with the girl in question.

In love: Daniel and Erin chat animatedly as they leave their dinner date in London

No Erin? Daniel Radcliffe is rumoured to be dating his co-star Erin Darke but stepped out with a different brunette female pal in London on Friday

Radcliffe was reportedly spotted kissing and cuddling Erin at a film festival in Utah last week but avoided being snapped together.

And according to The Sun the pair are serious.

A source said: 'Daniel was rea! lly taken with Erin on set but is cautious about coming out and saying hes seeing someone before he knows its something special. But he thinks now is the time to go public with the relationship.'

But if that be the case they decided to take a night off from each other on Friday when he the restaurant on Fulham Road.

Is it serious? Daniel and Erin can't stop laughing as they walk down the street

Burger date: The Harry Potter star and his female pal headed for dinner in Fulham, London on Friday night

As if by magic! Daniel and Erin are very much an item according to sources, after they met on the set of Kill Your Darlings but Daniel enjoyed a night without her this weekend

Both Radcliffe and his girl pal were wearing casual jackets and jumpers, with breaks in conversation only occurring when child actor Daniel stopped to light a cigarette.

Only a few days ago the actor was at the Grey Goose Vodka Lounge dinner at the Blue Door in Utah with Erin, where they reportedly hooked up.

It all started after the gregarious star had some fun by dancing with another of the movie's big names Michael C. Hall, who was attending with his novelist girlfriend Morgan Macgregor.

What a gent! Daniel keeps warm in a navy jacket while his date Erin opts for a snug jumper

What a gent! Daniel keeps warm in a navy jacket while his date opts for a snug jumper

Now there's a man in love: Daniel Radcliffe

Content and relaxed: Daniel Radcliffe looks pretty pleased with himself as he leaves the restaurant

Ladies first! The pair dined at burger joint Hauche, Daniel and Erin opted for a casual look for their date

Ladies first! The pair dined at burger joint Hauche, before finally calling it a night

Afterwards the latter sat on a couch while flanked by the Dexter star and Daniel.

All the while Erin sat on a chair next to her alleged sweetheart and continuously rubbed his knee, before they shared a kiss.They are then said to have headed outside, where they were spotted 'huddled' together with Daniel draping his arms around her.

A reveller claimed she is Daniel's 'girlfriend,' and they are debating on whether to go public, but the cheeky actor kept their relationship under wraps after he was asked about her at the event. He said: 'Erin? Oh, Erin Darke? Yeah, the whole cast is here. It's fantastic.'

Nice meal? The pair had been keeping their relationship a secret until this weekend

Nice meal? The pair left together and kept warm in the chilly London air

Perhaps the reason they were feeling so frisky is they had just watched the premire of their risqu new film.

Set in 1944, it is based on the true story and a murder involving poets Allen Ginsberg, Jack Kerouac ! and Willi! am S. Burroughs.

Daniel's character Ginsberg gets initiated into a risky world where it is common to overindulge in alcohol, drugs and gay sex.

Just a casual evening out: Daniel looks less than groomed on Friday evening

In one particularly shocking scene the lapsed Liberal Democrat receives oral sex from another man while in a library.

Daniel said: 'Films like this dont get made unless everyone involved loves them.'

When he was asked specifically about filming his character's library romp he say it took him a mercifully short time to finish.

He said: 'It was something new. But you know what? We shot the whole scene in maybe an hour and a half so it was incredibly fast-paced.

Gritty: Daniel's character Ginsberg is initiated into a world of drinking, drugs and gay sex in Kill Your Darlings

'I didnt really have time to stop to think and worry about it.'

He also said he was in the debt of the films director John Krokidas, saying: 'John was very helpful in furnishing me with a lot of graphic detail of what I would be experiencing at the various stages.'

Daniel has never been shy about baring all for the cameras however, as he appeared nude on stage in the play Equus when he was just 17.