Collins, 24, posted a picture of herself along with Cocquerel and actor Samuel Nolan while they were watching the Super Bowl together at the weekend and the pair were also photographed exiting Craig's restaurant together, reported Us magazine.
"They just started seeing each other. A friend introduced them. It's new. He is an all around great guy. She's happy," a source said.
Collins, who is rocker Phil Collins' daughter, previously dated her 'The Mortal Instruments: City of Bones' co-star Jamie Campbell Bower from 2012 to 2013.