Darren Criss skipped interviews at the premiere of his new film Monday, following the loss of his “Glee” co-star Cory Monteith, who died on Saturday in Vancouver from a combination of heroin and alcohol. Criss arrived at Cinema Society’s “Girl Most Likely” screening wearing a black ribbon and didn’t talk to press at the Landmark Sunshine. Criss seemed more relaxed at the Brooks Brothers after-party at Hotel Americano. “Criss was smiling and laughing with guests,” says a spy. “He gave girlfriend Mia Swier a cute peck on the lips.” Swier was heard saying the pair met before “Glee” and have been together three years. “We’re under the radar,” she said. Kristen Wiig, who also stars in the flick about a woman moving in with her mother, told us she couldn’t handle living at home. “It would be nice for the first couple days,” Wiig said. “My mom would be cooking . . . But after two days there would be issues. There would be a lot of me going for long walks . . .and then my mom going for long walks.”