Pamela Anderson and Liam Neeson are officially an item. "Pamela and Liam are dating," a source exclusively tells Us Weekly, noting that The Naked Gun costars, who met on set, "always had chemistry while they were filming and their friendship naturally developed into more." Taking their relationship to the next level is "new" for the pair, who are "learning how to navigate it together" as they continue to promote their new film, the insider says. "They are both shy and have tried to stay private but the spark between them is obvious.