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Good evening. Although you can never prevent someone from filing suit against you, your in-laws have no chance of prevailing in any such suit. First, because there is no written agreement, they are going to have a hard time sustaining the burden of proof
that this was a loan rather than a gift. Second, because it was made in NC and there is no written agreement, even if they could prove this was a loan, you have an absolute defense due to the statute of limitations
. Under N.C. Gen. Stat. § 1-46 et. seq., the statute of limitations on a verbal agreement is 3 years.
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