The couple was seen getting intimate at a bar in Hollywood here recently, eonline.com reports.
Nichols, 33, was previously in an on-and-off relationship with his "One Tree Hill" co-star Sophia Bush from 2006 to 2012.
Meanwhile, Bennet briefly dated her "Nashville" co-star Sam Palladio. Palladio confirmed their breakup at the "Runner Runner" premiere in Las Vegas Wednesday.
"I am not dating anyone at the moment. I am single. Not married and no attachments as of yet," Palladio said.
--IANS (Posted on 20-09-2013)