X-Men co-stars Sophie Turner and Tye Sheridan put on a cosy display after enjoying chicken lunch in London
They wrapped filming for their first film together last month.
And Sophie Turner and Tye Sheridan appeared to be keeping their close friendship going beyond a professional capacity as they were spotted enjoying a lunch outing in London on Thursday.
The X-Men: Apocalypse actors - who play Jean Grey and Cyclops, respectively - put on a cosy display as they emerged from the Oxford Street branch of popular high-street restaurant chain Nando's.
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Sparking romance rumours: Tye Sheridan and Sophie Turner put on a cosy display after enjoying a chicken lunch in London on Thursday
Tye, 18, played the perfect gentleman, leading Sophie, 19, out of the eatery.
The duo then strolled down the length of the Central London street arm-in-arm.
It's unclear who prompted the sweet gesture but Tye and Sophie mirrored each other, placing an affectionate arm around the other.
Heartfelt goodbye: The X-Men: Apocalypse actors gave each other a friendly hug after a lunch date at the Oxford Street branch of Nando's
Matching stances: Tye, 18, and Sophie, 19, matched each other's affectionate gesture, striding down the street arm-in-arm
Young love: The redhead radiated happiness throughout the duration of the pair's low-key outing
Well-mannered: The Cyclops star played the perfect gent, holding the restaurant door open for the Jean Grey actress
Satisfied customer: Tye looked pleased with his and Sophie's choice of lunch
Helping hand: Tye helped Sophie navigate her phone following the low-key lunch date
The Game of Thrones redhead - who plays Sansa Stark in the HBO fantasy series - radiated happiness as she enjoyed the company of her co-star off set.
She was dressed in a cool-casual all-black ensemble which comprised black ripped skinny jeans, V-neck vest top and a leather biker jacket.
She added a pair of baseball-style camo-print trainers and a skinny belt and secured her luscious ginger locks off her face with a pair of designer sunglasses.
Taking care of business: Award-winning Tye chatted on the phone, presumably booking them getaway vehicles
Keeping everyone guessing: Sophie's agent declined the offer to comment on the nature of the pair's relationship
Tye followed a similar comfortable dress code in a pair of grey jogging bottoms, unbuttoned plaid shirt, motif T-shirt and hi-top trainers.
The pair wished each other a fond farewell as they were pictured sharing a warm embrace before going their separate ways.
Sophie's agent declined to comment on the nature of the pair's relationship when approached by MailOnline.
Luscious locks: The Sansa Stark actress let her flowing red tresses flow freely down her back
Meanwhile, Tye's representatives are yet to respond to a request for comment.
Sophie and Tye star alongside each other in the ninth installment of the X-Men film series which is scheduled for release in North America on May 27 next year.
Talking about his character, he told Indiewire: 'It's forced me to use everything I've learned playing all the characters I have. My character is angry and a bit lost, which I feel like is where I've met a lot of my characters... the arc for the character is really cool for me.'
Meanwhile, Sophie is convinced she was cast after the producers saw the similarities between characters Jean and her role as Sansa in GOT.
She told IGN: 'I think maybe one of the reasons that they chose me for [Jean] is because they saw the dark side of Sansa. Maybe they're thinking, 'Oh, Phoenix, Jean Grey.' I definitely see a lot of parallels in there.
'[Jean] struggles with her power... and not being accepted in the human world. I think in terms of [GOT], that's kind of the way Sansa felt in that she really wanted to be a normal princess/queen and live a normal life - and she doesn't, because of all this havoc happens. I think Jean, in a way, feels that.'
Jennifer Lawrence and ex-boyfriend - Brit actor Nicholas Hoult - also star in the superhero movie.
Super-casual: Tye slipped on a pair of grey jogging bottoms while Sophie made more of an effort in ripped black skinny jeans paired with a vest top and a leather biker jacket
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