It’s a reunion 35 years in the making, thanks to mayonnaise. More than three decades after the romantic comedy “When Harry Met Sally” first hit theaters, Billy Crystal and Meg Ryan are finally back together.

Billy Crystal and Meg Ryan teased a long-awaited on-screen reunion with ... "When Harry Met Sally...," written by Nora Ephron, followed the yearslong relationship between the two New Yorkers, who go from feeling disdain to friendship to eventually, love.

Meg Ryan and Billy Crystal have “When Harry Met Sally…” fans saying “Yes! Yes! Yes!” after teasing an upcoming reunion.

"It felt the same," says Crystal, who spoke exclusively with PEOPLE about reuniting 35 years later at N.Y.C.'s Katz' Deli. Get all the behind-the-scenes details!

Meg Ryan and Billy Crystal reunite in a new ad for Hellmann’s that features a recreation of When Harry Met Sally’s famous fake orgasm scene—and a new rom-com star. Back at New York’s Katz’ Delicatessen,

Billy Crystal and Meg Ryan teased a long-awaited on-screen ... "When Harry Met Sally...," written by Nora Ephron, followed the yearslong relationship between the two New Yorkers, who go from ...

Meg Ryan and Billy Crystal have reunited in the famed Katz’s deli to recreate the famous “fake orgasm” scene from their beloved movie When Harry Met Sally.

The stars of the 1989 romantic comedy made their return to the legendary Katz's Deli in New York City to star in an epic ad for Hellman's mayonnaise, the brand released today on YouTube. Sitting across from each other at a deli table, the stars replicate the set-up for what is now the iconic "I'll have what she's having" scene.

Sydney Sweeney joins When Harry Met Sally stars Meg Ryan and Billy Crystal to experience the iconic fake orgasm. Read on for more.