Robert Pattinson & Kristen Stewart: Long, Long Ago...

Robert Pattinson and Kristen Stewart enjoy dinner a deux on Monday (October 4) in West Hollywood, Calif.

The Twilight co-stars dropped by Ago, an Italian trattoria that’s one of Rihanna‘s favorite restaurants in L.A.!

After their meal, the camera-shy and low-key couple dashed out of the restaurant and jumped into a cab.

Rob, 24, and Kristen, 20, also had a date night over the weekend. The two were spotted at West Hollywood’s Soho House where they “kept stealing quick kisses from one another,” an eyewitness tells E! News.

“Rob’s arm was around her for most of dinner and they kept looking at each other and giggling throughout the evening,” adds the source. “They are definitely into each other.”

FYI: Kristen is wearing a Superdry Scrambler leather jacket.