The new couple continue to make their romance public at a benefit event in L.A. – and then on Twitter

Credit: Jason Kempin/FilmMagic;Seth Browarnik/Startraks

They’ve been getting cozy at clubs around Los Angeles and even turned up the heat during a recent Las Vegas trip – but how serious are Avril Lavigne and Brody Jenner as a couple?

Looks like they’ve already met the parents.

At Friday’s Race to Erase MS gala at the Hyatt Regency Century Plaza Hotel in L.A., they shared a table with family, including Jenner’s mom, Linda Thompson, whom Lavigne greeted with a long hug. Then, the two spent the rest of their night looking very smitten with each other and sharing some PDA at the table.

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The singer, who performed five of her hits at the event, later took to Twitter, where she and Jenner continued their lovefest, completing each other’s sentences and getting lovey-dovey back and forth.

“I love you eyelashes,” Lavigne Tweeted to Jenner, who replied to her, “kisses.”

The two have become fixtures at Voyeur, a West Hollywood lounge, where they’ve partied on consecutive Thursday nights. During a recent visit, the two shared kisses in their banquette and “acted like they were the only two in the club,” an onlooker said.