And Gigi Hadid and her ex-boyfriend Zayn Malik have sent the rumour mill into overdrive, after the model shared a snap on Instagram of herself cooking one of the singer's mother's curry recipes.
During an afternoon in the kitchen, Gigi, 24, posted a picture of a selection of ingredients on her Stories, which she revealed were from Trisha Malik's pasta salad recipe, before tagging her in the post.
Furthering the speculation, Trisha reposted Gigi's picture and also shared a screen grab on her own account of an old video of Gigi revealing that her favourite restaurant was her 'boyfriend's mum's kitchen'.
After noticing the exchange, fans of the former couple took to Twitter to speculate that they had rekindled their romance, months after it was claimed they were back on speaking terms.
One fan, who assumed Gigi and Trisha were in the same kitchen after noticing the mother of the former One Direction star was also cooking, wrote: 'HOLD UP WHY IS GIGI WITH TRISHA ARE ZAYN AND HER BACK TOGETHER.'
While another added: 'Gigi tagged Zayn's mom on ig & gigi and his mom are both posting stories cooking but idk if it's the same place or not.'
One confused follower penned: 'Wait. Gigi with Zayn's mom. Does that also mean that Gigi with Zayn? Or just cooking with his mom? What.'
One fan speculated that Gigi and Zayn are secretly back together and said: 'A friendship can remain even if the relationship ends. Maybe Zayn and Gigi have been together again for a long time, but just now they are showing...
'Zayn is the most discreet guy I've ever seen, he only lets us know a small percentage of his life.'
While another simply added: 'ZAYN AND GIGI ARE BACK TOGETHER!?'
It was reported in November that Gigi had been reconnecting with Zayn, 26, following her split from Bachelorette star Tyler Cameron the month previous.
Gigi and Zayn dated on and off between November 2015 to January 2019 after the break down of his engagement to Little Mix star Perrie Edwards.
A source said: 'Gigi has always had a soft spot for Zayn and they have a lot of history together. They are definitely not getting back together but are on good terms right now.'
The insider claimed the former couple have been in touch as of recent, but are communicating on a 'casual' basis.
They added to E! News: 'They went through a phase where they took time apart and weren't communicating at all, but they have been in touch recently. She is supportive of him. They chat here and there but it's been casual.'
Catwalk queen Gigi has thrown her support behind the former One Direction star's career on social media in recent months.
The blonde beauty liked Zayn's Instagram post about his new single Flames, after showing her appreciation towards his rendition of Aladdin's A Whole New World back in May.
The exes first embarked on a relationship in November 2015, three months after he called off his engagement to Little Mix singer Perrie.
Gigi and Zayn weren't afraid of showing off their relationship in the public eye as the Los Angeles native starred in her then-beau's Pillowtalk video in January 2016, before the pair featured in Vogue's July 2017 edition.
After just over two years together, the couple confirmed their break-up on Twitter in March 2018.
The IMG model and the musician rekindled their romance a month later as they were pictured packing on the PDA in images obtained by TMZ.
Gigi and Zayn kept the status of their relationship low-key from August 2018, five months before they officially split.
A source told US Weekly at the time: 'They’re done. They could get back together, but it’s over for now.'
Prior to their romanc Gigi was in a relationship with Australian musician Cody Simpson from 2013 to 2015.
© Associated Newspapers Ltd.