Still going strong!

Despite Leonardo DiCaprio's busy filming schedule (post-Great Gatsby filming, he headed straight to New Orleans for Quentin Tarantino's Django Unchained), he and girlfriend Erin Heatherton seem committed to going the distance.

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On Monday, the duo lunched together at NYC's Candela restaurant -- and got caught staring lovingly at one another across the table. Last week, a source tells Us Weekly the pair also stopped by an event at NYC hotspot The Darby, where they were "inseparable all night."

"They showed up hand-in-hand," the eyewitness reveals. "They were acting like a couple all night!"

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DiCaprio first stepped out with the Victoria's Secret model in December; prior to dating Heatherton, his last serious relationship was with Blake Lively, from whom he split last summer.

This article originally appeared on Usmagazine.com: PIC: Leonardo DiCaprio, Erin Heatherton Enjoy Sweet Lunch Date