The property developer is apparently dating Hayley Goodhead, winner of Coleen Rooney's ITV2 model show Real Women, and has spent the weekend with her in the French capital.
Samia is currently dating co-star Will Thorp after announcing her split from Matt last month.
An onlooker in Paris told the News of the World: "I had to do a double-take because I thought he was with Samia. Good luck if he's moving on. It must be awful when your wife waltzes off with a co-star."
A friend added: "Matt admires her drive and commitment, and the fact she is drop-dead gorgeous can't hurt."