Travis Barker and Shanna Moakler's Birthday Blowout

Fame Pictures

If estranged couple Travis Barker and Shanna Moakler's tempestuous relationship isn't back in "on-again" mode, you wouldn't know it from their activities on Friday night.

Plane crash survivor and once-again Blink-182 drummer Barker helped his ex (or is she?) ring in her 34th birthday (which was actually on Saturday) in grand style. Barker and Moakler began their evening at approximately 8 p.m. at Beverly Hills eatery Crustacean, where they joined approximately 20 friends in the upstairs dining room for Moakler's birthday party, according to OK! Magazine.

Eyewitnesses tell the mag that Moakler sat at the head of a table covered with a centerpiece of white roses, lilies and hyacinths. The guests' chairs were festooned with white, cream and lavender balloons.

The merrymakers dined on a seafood-heavy menu that included tuna tacos, garlic noodles with sauteed prawns, Chilean sea bass and whole-roasted cracked crab. For dessert, a Molten Chocolate Lava Cake from Sweet Lady Jane's was served.

A source notes that the gathering was "very subdued... Nothing really rock 'n' roll about this bunch. There was no music playing other than the house music piped in from the restaurant."

That's probably because Barker and Moakler would be letting loose later. At about 12:30 p.m. a security guard—on loan from Dr. Dre—ushered Moakler, Barker and some friends into an SUV, which delivered them to Hollywood hot spot My House. Amid a crowd that included Bai Ling, Twilight hunk Kellan Lutz and Shawn Wayans, Barker and Moakler partied down until closing time.

Is that love we smell in the air, or the looming aroma of another future break-up?