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Blake Shelton, Gwen Stefani

Kevin Mazur/WireImage

Blake Shelton and Gwen Stefani really know how to pack on the PDA.

The two spent their Valentine's Day night at Clive Davis and The Recording Academy's legendary pre-Grammys Gala at the Beverly Hilton Hotel—and they couldn't keep their hands off of each other.

The two skipped the red carpet and entered the ballroom through a private entrance.

They were first seated at a table that included Richard Branson and Jane Fonda. As soon as the two singers sat down, Shelton put his arms around Stefani and pulled her in close.

A photo posted by marcmalkin (@marcmalkin) on

Before the evening's program of performances and a tribute to music executive Irving Azoff began, Stefani and Shelton were escorted to a table closer to the stage that included fellow The Voice judge Christina Aguilera and her fiance Matthew Rutler.

Again, as soon as they sat down, Shelton wrapped his arms around Stefani, who looked perfectly dressed for Valentine's Day in a short red dress.

The two stole some kisses during the festivities and danced during Carly Simon's performance of her classic "You're So Vain" and danced some more during the Earth, Wind & Fire medley. They scooted out through the backstage at about 11:30 p.m.

Yup, tthat's @zayn. Enjoy. #Grammys @thegrammys @beverlyhilton

A photo posted by marcmalkin (@marcmalkin) on

The star-studded guest list also included Harry Styles, former One Direction member Zayn Malik (no word if he and Styles ran into each other), Chris Rock, Caitlyn Jenner, Candis Cayne, Jamie Foxx, Chrissy Teigen, John Legend, Matthew Morrison, Ringo Starr, Fashion Police's Melissa Rivers, Adam Lambert, Meghan Trainor, Ciara, Russell Wilson, Courtney Love, Lana Del Ray, Juliette Lewis, Sylvester Stallone, Michael Keaton, James Bay, Keke Palmer and Janelle Monáe.

Avril Lavigne and Chad Kroeger appeared to be back on or at least on very friendly terms. Though the two weren't wearing their weddings rings, they walked the carpet and posed for photos together. The two announced in September they were splitting up after two years of marriage.

Melissa Etheridge, Carly Simon, Beck, Fetty Wap, Barry Manilow and Chicago also performed.

E!'s Grammy Awards coverage starts Monday at 4 p.m. ET / 1 p.m. PT. E! Online's Live From the Red Carpet Livestream begins at 5:55 p.m. ET / 2:55 p.m. PT. Plus, watch E! After Party: The 2016 Grammys at 11:30 p.m. ET / 8:30 p.m. PT. And don't miss the Fashion Police Grammy Awards special Tuesday at 8 p.m. only on E!