New reports say "Family Guy" creator Seth MacFarlane has a new girlfriend.  He is now dating "Pitch Perfect" actress Alexis Knapp.  

"It's been going on for a little while. It's very casual but they are hanging out and he is having fun with her," a source exclusively told E! News about the couple's new romance. 

"They've known each other for three years and have been getting closer for over a year," but they've only recently started seeing each other more frequently, the source said. "They always had good chemistry." 

Knapp even voiced a character in the "Valentine's Day in Quahog," episode last season of MacFarlane's show "Family Guy."

"Alexis' star is on the rise," added the insider. "He thinks she's really talented." 

Before her big break out role in "Pitch Pefect" as Stacy, Knapp, 24, was in "Couple's Retreat," "Percy Jackson & the Olympians: Lightning Thief" and "Project X."  This fall she will also be in "Super Fun Night," a new comedy from Rebel Wilson, "Pitch Perfect" co-star.

Knapp previously dated and has a two year old daughter with Ryan Phillippe.  MacFarline, 39, most recently dated Emilia Clarke of "Game of Thrones."  The couple broke up in March.