Efron even posted a picture of himself kissing Wilson's cheek on his WhoSay account. "She's a Laker fan too?" he wrote in the caption. "I think I'm in love."
Wilson was clearly enjoying her time with the High School Musical star. "Hanging with main man Zac, freestyle rapping, etc.," she wrote during halftime.
The Bridesmaids scene stealer also posted a picture of her Pitch Perfect costar Skylar Astin, 25, hanging out with Efron. "I had two hot dogs at half time!" Wilson joked in the caption. "Wait, that wasn't supposed to be rude."
Though the Lakers lost to the San Antonio Spurs 84-82, Wilson found a silver lining. "At least I got to meet the best Aboriginal player in the NBA, Patty Mills," the Australian actress tweeted.