They lit up the red carpet like a 100 watts.

Naomi Watts and Billy Crudup couldn’t keep their hands off each other at the Venice Film Festival while attending the premiere of his film, “Jay Kelly,” Thursday night.

The “Mulholland Drive” actress, 56, and Crudup, 57, were seen packing on the PDA while making their way down the star-studded red carpet.

In one sweet moment, Watts gave the “Morning Show” actor a smooch on the cheek, which had him grinning. Another image captured Crudup and Watts intimately holding hands.

The duo looked cozy as they wrapped their arms around each other while photographers snapped their photo.

Other Hollywood stars at the event included George Clooney and his wife Amal, as well as Adam Sandler, Laura Dern, Shailene Woodley, Riley Keough and Greta Gerwig.

Watts and Crudup first crossed paths while filming their Netflix series, “Gypsy,” in 2017.

The two began dating shortly after, but did not confirm their relationship until five years later when making their red carpet debut at the 2022 SAG Awards.

A year after taking their love public, they sparked engagement rumors, and in June 2023, shared the exciting news that they had tied the knot.

That same year, Watt’s ex-partner Liev Schreiber married Taylor Neisen.

Watts and the “Caught Stealing” actor — who share son Sasha, 18, and daughter Kai, 16 — dated for 11 years before ending things in 2016.

Schreiber, 57, and Neisen, 32, welcomed their first child together, a daughter named Hazel, shortly after saying “I do” in 2023.

Meanwhile, Crudup and his ex-girlfriend, Mary-Louise Parker, share 21-year-old son William. Crudup notoriously left the “Weeds” actress when she was seven months pregnant for Claire Danes.