Joey's autobiography Joey Essex: Being Reem is currently being serialised by The Sun, and in it he writes about how he and Amy had sex the second night after leaving the I'm A Celebrity...Get Me Out Of Here! jungle.
The former TOWIE star then goes on to reveal that they had a 'sexy tryst' in the plane toilet on the way home from Australia, but added that things fizzled out after she described him as her "little brother".
Joey was single when he appeared on the ITV1 show, having split up with Sam shortly after their Dubai engagement in May 2013, and she was quick to give her opinion on his relationship with Amy. In one interview, Sam said Amy "wouldn't be welcome in Essex".
Following his stint in the jungle, Sam appeared in Celebrity Big Brother and was then diagnosed with Crohn's Disease during the last series of TOWIE.
Around this time, Joey and Sam rekindled their relationship and Sam later admitted that she was leaving TOWIE to concentrate on their romance.
In his book, Joey writes: "Whenever we start speaking, we fall back in love with each other straight away. It's like a chemistry thing, we can't help it."
Referring to their romantic reunion, he added: "It's like nothing ever happened."
Joey is currently in Brazil working and yesterday shared a new picture of himself and Sam kissing. Alongside it, he commented: "Missing my best friend @SamanthaFaiers."
Sam then retweeted the snap, adding: "Miss u too hurry home xx."
Amy, meanwhile, has not mentioned Joey's comments about her. However, she has posted a cryptic picture on Instagram which shows a pair of scissors made to look like people and a butterfly gently balancing between the blades.
Alongside it, Amy wrote: "It represents the fragility of friendship. Once you get too close you can break something that can be beautiful.
"If you recede too far the beauty will fly away. The eyes on the butterflies wings symbolise the truth about the pain they have seen." Hmmmm!
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