LOVE Island fans are convinced Luca Bish and Grace Jackson are faking their feelings are spotting a giveaway "clue".
Some viewers have been left sceptical of their romance since day one - claiming they have "zero chemistry".
And now fans have noticed that the pair seem to lack communication and instead fill the silence with a lot of snogging.
One wrote: "Luca and Grace don't even chat, all they do is kiss."
A second posted: "Luca acts like a robot with Grace. When are you guys going to be honest? All they do is kiss to make their awkwardness less obvious."
A third said: "Can’t lie, Luca and Grace have no sexual chemistry."
While another added: "Luca and Grace have no chemistry, all they do is kiss to avoid having a conversation."
Grace - who's in a romance with Luca - has made it very clear she doesn't like Samie, ever since the bombshell arrived on the show this week.
As soon as Samie arrived in the villa, Grace was heard saying that she snubbed her and hadn't said "hello", sparking feud speculation.
The two women then locked horns over Luca, after he kissed Samie in a game of spin the bottle.
Things then went from bad to worse when the public put Luca and Samie together as a couple, and left Grace single.
It first appeared the two women didn't like each other because of the Luca love triangle, but now viewers have come up with a new theory - and it's a good one.
Eagle-eyed fans have been doing some armchair detective work and have noticed how Grace's Love Island ex Joey Essex had been liking a lot of Samie's posts in the run up to All Stars kicking off.
TV star Joey was famously paired with blonde bombshell Grace before ditching her for Jessy Potts on the TV show last summer.
Grace and Joey had also enjoyed a romance before their time in the villa.
When she first arrived on All Stars, Grace also mentioned how they had "been in touch" recently.
