The actor, who played Lucas Scott in the long-running teen drama, went public with his new romance via Twitter on Wednesday night (30 October).
Chad tweeted a photo of himself and Australian actress Nicky locked in an embrace, adding the caption: "I am a lucky, lucky man. Blessed 2 feel the way the way I do with @NickyWhelan! I hope each of u feels the same in ur world."
Nicky replied: "ALL MY LOVE"
It's though Chad and Nicky met on the set of upcoming movie Left Behind, a thriller that sees millions of people around the world vanish with no explanation. Yikes.
Chad ended his seven-year relationship with former fiancée Kenzie Dalton in September. They'd met on the set of One Tree Hill when she played a cheerleader.
Prior to that he was married to another One Tree Hill star, Sophia Bush. Chad and Sophia, who played Brooke, married in April 2005 but split five months later.