Inside Taylor Swift and Tom Hiddleston's Latest Date Night: Smiles, Stolen Kisses and Security Guards!

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While Kanye West was partaking in one of his favorite hobbies on Wednesday evening -- talking about Taylor Swift, this time during a surprise appearance at a Drake concert -- Taylor Swift was enjoying one of her own: Being cute and coupley and stuff with Tom Hiddleston!

The 26-year-old pop star and her King Kong: Skull Island actor boyfriend, 35, enjoyed dinner at Hillstone restaurant in Santa Monica, California. Swift wore a little black dress and red lipstick -- naturally, it's her go-to look -- and the date night was as PDA-filled as ever.

"[Taylor and Tom] seemed happy and laughing, touching, holding hands. They were both smiling a lot," an eyewitness tells ET. "He kissed her at the table."

WATCH: Kim Kardashian and Kanye West Shade Taylor Swift Again: 'I Was Such a Fan Of Hers'

There was one not-so-romantic aspect to the evening, though it's probably something that doesn't even faze Swift at this point.

"The security guards were no joke. [The security detail] had their own table next to us and another one was hiding behind a plant right behind them," the eyewitness said. "There were probably three guards, maybe four."

The West Coast date might be the couple's most low-key yet, as their tour-de-love has taken them from Rhode Island to Tennessee, and then as far away as London, Rome and Australia. The latter was where Hiddleston introduced his girlfriend to his Thor: Ragnarok family earlier this month.

"I've seen Tom around and he looks happy, mate," Thor himself, Chris Hemsworth, said.

While Down Under, the Marvel stars and Hiddleswift took in a special screening of Ghostbusters -- with 11 security guards in tow. Find out more about the outing and the couple's whirlwind romance in the video below.