JERUSALEM — Usually, post-screening sessions with filmmakers are for audience questions. But after a showing of “Peace After Marriage,” Ghazi Albuliwi, the film’s writer-director-star, had a question of his own: Had any of the Israelis in the theater had sex with a Palestinian?

After much shifting in seats, a woman raised her hand and said well, not exactly, but she had managed a few dates. A rabbi’s wife was ready to brag about friends who broke the Israeli-Palestinian bedroom barrier when a bearded man in front spoke up. He was Palestinian, a Muslim it turned out, and said he had done the deed with the supposed enemy, an Israeli Jew.

Mr. Albuliwi, a New Yorker of Palestinian descent, fell to his knees in mock praise of Allah. Now he had more questions: Was she, perchance, a soldier? With a gun? Might an introduction be in his future?

The aging, left-leaning audience at Jerusalem’s Cinematheque, where Mr. Albuliwi’s romantic comedy opened the recent Jewish Film Festival, cracked up. Here, finally, a film about the intractable conflict that was not supposed to make them feel guilty, only to make them laugh.