The 30-year-old actress and 41-year-old actor attended the New York premiere of Blunt and Krasinski's movie A Quiet Place at AMC Lincoln Square theater. Krasinski directed and co-stars with Blunt in the film.
Lively, who wore a black dress with a plunging neckline, was all smiles as she posed for photos with Reynolds. The couple married in September 2012, and share two daughters, 3-year-old James and 18-month-old Ines.
The premiere followed rumors Lively and Reynolds are having marriage trouble and struggling to spend "quality time" together. Reynolds jokingly dismissed the reports in a tweet Saturday.
"I wish. I could use a little 'me time,'" he wrote.
A Quiet Place opens in theaters Friday, April 6. The movie, which co-stars Millicent Simmonds and Noah Jupe, follows a family who live in silence in order to evade creatures who hunt by sound.