I have read some horrific charges in child support and divorce papers. The wording is such as to get a response out of the other party. The vast majority of claims are proven false in a hearing.
Basically, you can say anything in a civil document accusing the other party and don’t have to defend it until it goes to a hearing or trial.
Bascially, I wouldn’t give this claim by the ex a moments thought until after the hearing/trial.
Nothing like an ex spouse that feels slighted or has possibly been offered something from the other side. But this is ridiculous. I saw a judge put a guy in jail because he didn’t come up with the money and he had it. He said he had cancer which may have been true or not; but he had the money and he didn’t pay; so he was going to jail.