Various Italian media outlets had claimed Nainggolan, 25, faced a police charge for allegedly striking Claudia Nainggolan in a Cagliari street.
But both the player and his spouse played down the incident, with Nainggolan admitting the two had argued but denying he struck her.
"I want to say something to everyone! You should mind your own f***ing business...
"Problems exist in families... But I did not lay my hands on her!!"
Claudia, 32, said the two had quarrelled but that it had been blown out of proportion.