Ben and Kendall had been pretty inseparable lately ... with dinners and bike rides all around town.

But, after Kendall sucked face with 18-year-old Anwar Hadid -- Gigi and Bella's little bro -- seems the Philadelphia 76ers superstar is ready to move on.

Ben hit up Catch in West Hollywood -- one of the hottest restaurants in town and a paparazzi hornet's nest ... where stars often go to be seen.

Seems he wanted to make a statement without having to say anything.

Meanwhile, there are now reports Ben's ex-girlfriend, Tinashe, is moving on too -- allegedly hanging out with Kendall Jenner's ex-BF, Blake Griffin.