Ross, who was a Traitor on the show alongside winner Alan Carr and singer Cat Burns, found the experience difficult.
Speaking on the Reel Talk podcast, he noted that the strong emotions displayed at the end of the series showed how challenging it was for all involved.
He observed that certain individuals from the show appear to struggle with accepting that it was 'just a game'.
Ross chose not to name the specific people he believes are still harbouring resentment.