THE infamous 'heart rate' challenge returns to the villa tonight – with controversial lap dances set to cause plenty of drama.

On every Love Island season the contestants' heart rates are monitored while they do sexy dances for each other.

It makes for awkward viewing as villa exes perform for each other in front of new love interests.

More often than not it causes massive arguments between couples.

And with an ongoing love triangle involving Ron Hall, Lana Jenkins and Casy O'Gorman, things could turn explosive.

There's also history between Olivia Hawkins and Tom Clare, who is now coupled up with Samie Elishi.

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The boys are up first as they each perform a sultry dance routine for the girls, who are sporting heart-rate monitors to see who gets their pulses racing.

Shaq dresses as an airport security officer as he performs first, saying: “Which one of you girls needs a pat down?”

Casey dons a cheeky lumberjack outfit, Kai shows off his moves as a soldier, Ron gets pulses pumping as a builder, and Tom arrives as a dark angel complete with wings to tempt all of the girls. 

He admits in the Beach Hut: “Hopefully I got the girls’ hearts pumping, my heart’s still pumping!” 

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Jordan rocks American football attire as he gives Tanyel a lap dance. She says: “Jordan has got rhythm, I loved his little hips moving!”

Will stuns the girls as a saucy pirate, with one of the girls saying: “Oh Will, Will, Will! No-one will ever do it like him, he just goes above and beyond.”

The girls are up next, as Olivia dons a latex ring girl outfit and seems to be off to a flying start, while Lana pops out of a giant present dressed in a red bow and one of the boys says: “She walked out and it was like from a cartoon where your eyes just burst out of your face.”

Ellie comes out dressed as a sexy cat, while Samie dons a devil outfit. Tanya stuns as a French Maid, while Tanyel shows off her best twerking as a cheeky bunny. 

Meanwhile, Jessie wears an all pink cowgirl outfit – and as she arrives at the fire pit she says “Howdy boys!” before dropping into the full splits.

Last summer, Jacques O'Neill's heart raced more for his ex Gemma Owen during the sexy dancing task.

In the past it's led fans to suggest the results are "fixed" by producers.

Former Winter Love Island star Shaughna Phillips slammed the experience as "vile" – revealing contestants don't get a say in what they wear.

She was devastated to learn she had to wear a skimpy outfit and also claimed the results were fixed anyway.

Shaughna cried all day before having to do it – and even threatened to quit.

“I cried from lunchtime to the minute I walked out [to dance]," Shaughna said on the Should I Delete That podcast.

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"I said to them [show producers], ‘I will go out naked in nipple tassels, as long as you give me trousers, tights, or thigh high boots. I will do whatever you want’.

"And I was the only girl that had none of that. I said to them, ‘I might just walk. I can’t do this’.” 

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