Jennifer Lawrence and Nicholas Hoult: Are They Back On?
05/01/2013 AT 07:50 AM EDT
"They arrived together," an observer tells PEOPLE about the couple, who are both now shooting the X-Men sequel, X-Men: Days of Future Past.
Notes another eyewitness at the restaurant: "It looked like a date," though they weren't openly affectionate.
The Oscar winner, 22 and the Warm Bodies actor, 23, who first met on the set of X-Men: First Class, had kept their two-year relationship relatively low-profile, enjoying surfing sessions and games of basketball.
The usually private Lawrence gushed last year about her then-beau: "[My boyfriend] is honestly my best friend, and hopefully I'm his best friend, too. He's my favorite person and he makes me laugh harder than anybody."
Reps had no comment regarding the reunion – so, for now, only time will tell.
Reporting by PERNILLA CEDENHEIM