Earlier this year he insisted he was fighting for his marriage to wife Kirsten and labelled as “crackers” claims he was having an affair with Laure Ferrari, who is 16 years his junior.
But glamour model Valerie — who got carried away with Mr Farage on the overnight Atlanta to London Virgin flight — said: “He called the French woman his partner. I was surprised.’’
And the dad of four, who turns 53 on Monday, and Ms Ferrari, 37, were apparently together at the £4million Chelsea pad he uses in the week.
Valerie, 30, said: “I asked him about his wife. He just said, ‘She’s f****** huge. She’s so big’.
"I didn’t like that, he’d nothing nice to say about her.
“And he was very dismissive about his French girlfriend.
"He just said they were dating.
"I asked if it was serious and she wanted kids and he was moaning he already had too many.
“But he looked at me like, ‘Yes, she does’. I said, ‘You need a vasectomy’.
Mr Farage has previously insisted he was just helping Ms Ferrari with accommodation.
The Frenchwoman, who runs the Institute for Direct Democracy in Europe, was seen leaving the pad, where Mr Farage was snapped loading suitcases into his car.