Adam Levine and Behati Prinsloo attends the 2014 Vanity Fair Oscar Party hosted by Graydon Carter on March 2, 2014 in West Hollywood, California. Credit: Pascal Le Segretain/Getty Images

He won't be going home without Behati! Adam Levine and his fiancee Behati Prinsloo turned heads as they attended Vanity Fair's Oscars party in West Hollywood on Sunday, March 2.

Levine, 34, and the Victoria's Secret model kept close as they walked the red carpet. The Voice mentor looked handsome in a Salvatore Ferragamo tux with slicked-back hair, while Behati, 24, sizzled in a dark red Calvin Klein Collection ensemble. She accessorized the look with a Salvatore Ferragamo clutch. 

"They had their arms around each other," an eyewitness told Us Weekly of the couple. "They were having a great time."

The "One More Night" singer and Prinsloo announced their engagement back in July, and had no concrete wedding plans as of October. "I'm so laid back -- my mind has been going but we haven't talked about anything!" Prinsloo told Us while promoting the new Victoria's Secret fragrance in NYC at the time of their engagement. "We're just so excited in this moment! I'm like, 'Yikes!'"

Levine, however, publicly spoke out against marriage before proposing to his now bride-to-be. "Famous last words, 'I'll never get married,'" he joked during an appearance on The Tonight Show With Jay Leno on Oct. 28. "I still don't necessarily think you have to get married unless you meet someone that makes you want to marry them. And then you marry them and it's wonderful."