Everyone seems to be Team Conrad.

Sean Kaufman and Christopher Briney shared an unexpected kiss at the New York Knicks game on Friday.

The “Summer I Turned Pretty” co-stars were attending the NBA team’s home game against the Milwaukee Bucks at Madison Square Garden in New York City, when they were spotted engaging in PDA.

“Summer I Turned Pretty” co-stars Sean Kaufman and Christopher Briney shared an unexpected kiss on Friday. Getty Images

They were attending the New York Knicks game at Madison Square Garden. Getty Images

When the venue’s camera put them on display, Kaufman got up, turned to Briney, grabbed his face and planted a kiss on his lips.

After the smooch, Briney busted out laughing.

“belly you have some competition 😍,” the Knicks’ official Instagram account wrote in the caption while sharing a video of the lip-lock.

When the venue’s camera put them on display, Kaufman planted a kiss on Briney’s lips. Getty Images

Briney laughed. Getty Images

“Everyone is Team Conrad,” they added atop the clip, referencing the famous love triangle between Belly (Lola Tung), Jeremiah (Gavin Casalegno) and Conrad (Briney) in the Netflix series. Kaufman plays Steven — Belly’s older brother.

Other celebs attending the game included Ray Romano, Jordyn Woods and Spike Lee.

Following the series finale of “The Summer I Turned Pretty,” which aired in September, Amazon Prime revealed the cast would be returning for a movie.

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“belly you have some competition 😍,” the Knicks’ official Instagram account wrote in the caption while sharing a video of the lip-lock. Getty Images

“Everyone is Team Conrad,” they added atop the clip, referencing the famous love triangle between Belly (Lola Tung), Jeremiah (Gavin Casalegno) and Conrad (Briney) in the Netflix series. ©Amazon/Courtesy Everett Collection

There are no details on what the plot will be yet, but it will be directed by “The Summer I Turned Pretty” author Jenny Han, who penned the trilogy of books the show is based on.

“There is another big milestone left in Belly’s journey, and I thought only a movie could give it its proper due,” she said in a statement at the time. “I’m so grateful to Prime Video for continuing to support my vision for this story and for making it possible to share this final chapter with the fans.”

“The Summer I Turned Pretty” spanned three seasons on Amazon Prime. Aside from Tung, Briney, Kaufman and Casalegno, the show also starred Rain Spencer (Taylor), Jackie Chung (Laurel), Tom Everett Scott (Adam) and Rachel Blanchard (Susannah).