The couple's co-star on the ITV2 programme described them as being "so loved-up" and said that it wouldn't be a shock to see them planning a wedding.
"They talked about it, but they've got so much going on with holidays and filming that they've decided to hold on until after Christmas," Billie told New.
"I wouldn't be surprised if it was at Christmas. They're so loved-up."
Essex recently claimed that he and Faiers talk about marriage and children "literally every night", while she admitted that she could picture herself tying the knot with her TOWIE colleague.
However, their co-star Billi Mucklow recently told Digital Spy that she thinks the couple are "definitely not" ready to start a family.
"Joey can't even look after himself, let alone a baby," she said. "I would love to see them try though."
The Only Way Is Essex continues Wednesday, August 22 at 10pm on ITV2.