Mr. Cornelio began paying child support for his ex-wife's twins after the couple separated in 1998. The former couple settled upon a joint custody agreement in 2002 that continued Mr. Cornelio's monetary support for the twins.[14] Shortly afterwards Ms. Cornelio requested a reduction in visitation time along with an increase in support payments that prompted Mr. Cornelio to question the paternity of the twins. A subsequent DNA test revealed that he was not their biological father. A request was made by Mr. Cornelio to be excused from paying further support claiming to be the victim of misrepresentation or fraud when Ms. Cornelio failed to disclose the affair while they were married when he signed the 2002 joint custody agreement.

The Ontario Superior Court of Justice in 2008 ruled against the request to be excused or reimbursed for support payments. Judge van Rensburg in deciding to deny the request noted Mr. Cornelio had wondered at the time of his separation if an affair by his ex-wife had actually been responsible for the twins. "It was not until access was interrupted and Ms. Cornelio commenced proceedings seeking increased child support that the respondent began pursuing this issue," the judge remarked. "The fact of that relationship – even if it has now become strained – is sufficient to require Mr. Cornelio to continue to contribute toward the children's material needs."