The 33-year-old actor spoke to Entertainment Tonight at the Avengers: Age of Ultron premiere, and grew flustered when asked if he is single. Evans has reportedly been seeing the 26-year-old actress since February, but bashfully avoided confirming a relationship with the star.
"Oh, come on. We're not... we're not, uh, listen, listen, listen, listen," he responded while petting correspondent Nancy O'Dell's microphone. "We... we're not gonna give the answers to those questions."
Evans and Collins are said to have met at the Vanity Fair Oscar party, and were photographed several weeks later at Pace restaurant in Los Angeles. The actor previously dated Jessica Biel and Minka Kelly, while Collins has been linked to Taylor Lautner and Zac Efron.
Evans will return as Marvel superhero Captain America in Avengers: Age of Ultron come May 1. Collins is known for portraying Snow White in Mirror Mirror and Clary Fray in The Mortal Instruments: City of Bones, is scheduled for an upcoming Warren Beatty film on Howard Hughes.