obbie Williams expected his wife Ayda Field to keep his "X Factor" act LMA Choir on the show after the couple made an "unspoken" agreement.
The 44-year-old singer was left in "shock" that the group were eliminated from the talent show on Sunday (28.10.18) after losing the sing-off to Brendan Murray, and admits he assumed his significant other and fellow judge would vote for them, but she chose the Irish star, sending the decision to Deadlock.
He said: "I found it a shock. I really, really found it a shock.
"I erroneously thought we had 50 per cent of the vote but apparently we don't. It was an unspoken thing."
Robbie also admitted he and Ayda, 39, have clashed over song choices for their "X Factor" acts, but she has the upper hand because she gave birth to their kids, Teddy, six, and Charlton, four.
The "Let Me Entertain You" hitmaker - who also has four-week-old daughter Coco with Ayda, after she was born via surrogate - added: "We're very competitive. We were going through song choices yesterday and she pulls the female card. Just no, you can't."
Ayda said: "I pushed babies out of my hoohah I mean, come on."
While Robbie misses LMA Choir "terribly", he admits the right contestant progressed.
Speaking at The Pride of Britain Awards, he told The Sun Online: "Brendan rocked his performance and he had to go through."
Earlier this month, Ayda admitted she is "100 per cent" sure one of her "X Factor" acts will win the series, so much so she placed a bet on each one.
She said: "I think I've got the winner for sure, 100 per cent. Listen, I'm going to put money on all of them, every single one of them."
However, Ayda's act Janice Robinson was axed last weekend, and Olatunji Yearwood was eliminated the week before, leaving her with just Danny Tetley and Giovanni Spano.