Forget popcorn and beer, Ben Affleck got a side of Jennifer Lopez at the Lakers game on Tuesday ... with the Oscar winner getting some serious PDA from J Lo all night in front of LeBron James!
Ben and Jenn sat courtside for L.A.'s tilt with the Boston Celtics at Staples Center ... and cameras caught them getting cozy throughout the evening.
Early in the game, the two were seen on the broadcast cameras -- with J Lo holding Ben's hand while LeBron was just feet away playing on the hardwood.