Gabriel Aubry made a big mistake getting involved in a Thanksgiving day bust-up with Olivier Martinez: the French actor has serious boxing skills.

In fact, Halle Berry’s tough guy fiancee prophetically warned about his talents in an interview just last month.

“I had a good left hook — but keep that a secret!” revealed Martinez in the write-up.

The 46-year-old Unfaithful star, who spoke with Ocean Drive Magazine for its men’s issue in October, was taught to fight by his former professional boxer father Robert Martinez while growing up in Paris. And he almost took up the brutal sport for a living before turning to acting.

“Boxing is the ‘noble art’ — that’s the name of the game. It’s savage, but with rules, discipline, and a high sense of morality,” Martinez said in the inteview. “At times, it seems like society has no morality, so I’ve always liked boxing because it is hard, it’s violent, but it’s honest.”

And nobody knows that better than Aubry, 36, who was hospitalized following the nasty brawl with the broody actor and has the bruises to prove it, with the handsome catwalker spotted sporting a huge black and blue swelling under his left eye.

The fight reportedly erupted inside Berry’s Hollywood home after Aubry arrived to drop off their 4-year-old daughter Nahla.

Berry, 45, was subsequently granted an emergency protection order against Aubry, banning him from coming within 100 yards of herself, Nahla or Martinez, while the French Canadian was arrested on suspicion of misdemeanor battery and was released after posting a $20,000 bail bond. Aubry is set to face a judge Dec. 13.

It’s also been reported Berry will go to court early this week to seek a restraining order against her ex, TMZ is reporting, in the hopes of extending the emergency order.

The Thanksgiving fight is the latest chapter in the nasty feud between the pair which escalated out of control after a judge recently denied Berry’s request to move Nahla to Martinez home country of France.

What do you think of Martinez’s boxing background? Sound off below.