The 36-year-old actress discussed her 34-year-old True Detective season 2 co-star in an interview with Entertainment Tonight. McAdams neither confirmed nor denied whether she and Kitsch are together, but said she finds the speculation bizarre.
"It's funny, the things the Internet likes to proclaim," she mused. "Weird, right? Weird, weird, bizarre, surreal side of it, but I guess you kind of just have to laugh at it at a certain point ... I find it really confusing, but yeah, it's an odd little thing."
McAdams and Kitsch met on the set of the HBO series, and were spotted at Osteria Mozza restaurant together in June. Us Weekly subsequently reported the pair are dating, with a source telling the magazine the actors are "serious."
McAdams previously dated The Notebook co-star Ryan Gosling and Midnight in Paris co-star Michael Sheen, while Kitsch was linked to Friday Night Lights co-star Minka Kelly. True Detective season 2 airs Sundays at 9 p.m. ET.