The first episode of Love Island not only dropped the bombshell that twins would be gracing for the first time, but also that they would be stealing away two of the girls' partners.
Unsurprisingly this didn't go down to well, and within just a few hours tensions started to build.
Blonde sisters Jess and Eve started inviting each of the boys for a chat to get to know them better before working out who fancies who.
They've said that while they have a similar taste in guys, they claimed they never, ever argue or fight over men.
But it looks like that rule might not apply within the walls of South African villa.
As they sat down to make their final decisions on who to couple up with, the sisters appeared to clash. Oh dear...
The heated conversation was over Callum, who was originally coupled up Shaugna.
Eve was seen whispering to Jess that she'd made her mind up that Callum was the guy she was going to pick when it came down to it.
But Jess didn't seem to take it very well.
When she agreed that she probably would have picked him too, it was clear that the damage had been done.
Eve grimaced at the frosty atmosphere, making them both laugh.
Drama averted? Apparently not when Jess, still seething, restarted the conversation, saying "I can't believe you made that decision," and wanted to explain.
Eve tried to calm the situation, saying, "We're not arguing over a guy Jess," before Jess interrupted and asked her to stop talking.
The conversation ended just before the text chimed.
In both their introduction videos and individually in the beach hut, the two of them said they'd never argue over the same person romantically.
At the beginning of the episode Mike asked the girls whether there was a chance that they'd end up liking the same person, but they both said their hearts weren't set on anyone.
Both Jess and Eve had kept who they fancy under lock and key until last night's episode when they said Callum and Mike were two of their choices.
And the mayhem didn't stop there, Eve coupled up with Callum as she'd planned, and Jess chose Mike, leaving behind Shaugna and Leanne to fend for themselves.
A number of fans commented on the argument.
One said: "The twins saying they’re not going to argue over a guy but end up arguing over a guy."
And another said: "I thought these twins said they don’t fight or argue when it comes to guys."
