Kristen Stewart and Robert Pattinson woke up late Wednesday after celebrating KStew's 23rd birthday Tuesday night, and enjoyed a yummy hangover lunch at En Sushi in Los Feliz.

The lovey-dovey pair dined with friends at the local hotspot, dressed down as always, looking happy and in love.

Our photographer tells us: "They finally look relaxed again. Rob and Kristen looked really happy and 'together.' They were totally in synch and enjoying their time together. It looks like this time it might last."

Are these two back together for good?