An eyewitness tells ET that the two arrived late Friday night in the City of Light along with some friends, and headed to the exclusive Park Hyatt hotel. On Saturday, Martin and Wallis, 31, were also spotted shopping in the 8th district of Paris before grabbing some French food.
The pair looked "very in love with each other" during their romantic excursion, and were "laughing and kissing all the time," according to the eyewitness.
In July, Paltrow opened up about her "imperfect" relationship with the father of her two children, Apple and Moses. "I'm very, very lucky that I have a partner who's willing to do it with me in a really collaborative way," she admitted at the #BlogHer15 conference. "I'm really for Chris, and he's really for me, and our children are our priority."