With their wedding reportedly just weeks away, they put on a real show for the "kiss cam," that had the thousands of fans in Staples Center screaming for more.
When not making out with his sexy bride-to-be, rabid Lakers fan Justin was often on his feet cheering on Kobe Bryant and the boys.
It may have helped. The Lakers won the hard-fought play-off game 96-87.
And this wasn't Timberlake's only starring role last night.