The two have kept a low profile with only family and close friends knowing the details of their relationship.
They have also avoided making public appearances as a couple despite being at the same events.
Common is used to high-profile relationships having been previously linked to Serena Williams, Taraji P.
Serena Williams and Common are rumored to be dating again, TMZ said.
The couple, after breaking up in 2010, was spotted over the weekend at the grand opening of the Yetunde Price Resource Center in Compton, Calif.
Both Serena, 35, and her sister Venus Williams, 36, founded the center, which offers assistance to victims of violence.
Common and Dern have been dating and “getting to know each other” according to a new report from .
From the sound of the dating rumors, Common and Laura must be pretty serious because they claim that the rapper has already met Dern’s children.
We worked together and right now I'm just single, so." After the co-hosts teased him about the swirling gossip and blog fodder, Common doubled down on his stance.
SEE IT: Beyoncé brings out Jay Z, Serena Williams to end tour It is named after their half-sister Yetunde Price, who was murdered in 2003.
Sources close to TMZ said that Common, born Lonnie Rashid Lynn Jr., was "chatting" with Serena in the back of the center.
A source told US Weekly that Dern “has a thing for musicians” and is happily pursuing romance following her split from her ex-husband, blues singer Ben Harper, three years ago.
Common was seen having dinner with Laura Dern in Beverly Hills and now the two have been romantically linked.