Jennifer Lopez Snuggles Ben Affleck At Lakers Game, PDA In Front Of LeBron!

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 Jen 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.

In the middle of the game, the couple was spotted on the jumbotron, and their flirtatious convo was viewed by everyone in the venue's packed crowd.

And, after the game, J Lo was seen wrapping her arms around Ben, snuggling her man as everyone filed out of the venue where the PDA continued at an event sponsored by PrettyLittleThing.

Of course, it was all lovey-dovey ... but Ben didn't exactly get to go home super pleased -- his beloved Celtics were blown out by LBJ and the Lakers, 117-102.