12/14/2012 at 06:00 AM EST
Even a Family Guy loves a night out.
Seth MacFarlane stopped into Sugarfish in Santa Monica, Calif., just after 8:30 p.m. on Wednesday night for dinner.
Wearing jeans and a plaid button-down shirt, MacFarlane waited patiently inside for a table, agreeing to take a photo with two fans and chatting with them before sitting back down to continue waiting.
Roughly ten minutes later, the Oscar host
was joined by an unidentified blonde and got up from his seat to greet her with a hug, an onlooker tells PEOPLE.
Although the pair immediately jumped into conversation, they "definitely appeared to be just friends," the source adds.
Once seated, MacFarlane dined mainly on sashimi and was "clearly enjoying himself." The two clinked their beers and chatted "non-stop" until their plates were cleared around 10:15 p.m.
But it wasn't before long, MacFarlane and his friend got up from the table to say their goodbyes.
"He chatted with a few employees and thanked them before holding the door for his friend as they made their way outside and to the nearby valet," the source adds.
– Jen Garcia