Robert and Adrienne's Low-Key Love

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Unlike other young stars, you won't find Robert Kardashian Jr. and girlfriend Adrienne Bailon partying 'til they drop.

The Cheetah Girl,24, and her Keeping Up with the Kardashians hunk,21, keep it low-key, preferring to stay in most nights.

"We stay home and watch movies," Adrienne told OK! at the May 2 Disney Channel Games party at Epcott Center at Lake Buena Vista Fla. "We like to go shopping and chill out."

That's not to say that the two don't stay active. "He's actually getting me to work out," reveals Adrienne, "So we've been hitting the gym a lot lately."