The pair, who have been at the centre of romance rumours, allegedly fell out when Aliona confronted Jay about messages he’d sent to other dancers on the show.
According to The Sun, Aliona “hit the roof” when she learnt that he had sent texts to fellow pros Kristina Rihanoff and Ola Jordan, as well as contestant Georgia May Foote.
“She was the same with previous dance partners as she believes that to win, couples have to be totally united. Jay’s starting to tire of it all.”
It was only last week that Jay was forced to speak out about the reports of a romance between them, after it was claimed Aliona and her husband Vincent Kavanagh had rowed about her closeness to Jay.
The rumours started when Jay was pictured with his arms wrapped around Aliona, who was wearing his coat, but the former The Wanted singer insisted that they were actually with friends on a night out when the snaps were taken.
“I’m not going to let them bother me and neither are Aliona and her husband,” he told OK! magazine.
“We have all had a laugh about it as we were actually stood outside with a whole group of people. Aliona was cold and so I put my coat around her.”
‘Strictly Come Dancing’ continues on Saturday on BBC One.