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Miley Cyrus and buff boyfriend Liam Hemsworth are such an adorable couple.

Liam led his pretty lady through the parking lot after a trip to the grocery store ... and check out all of their bags! We see some Monster energy drinks in there. Caffeine overload!

While Mr. Hemsworth wore a tank top to show off his built biceps, Miley, 18, opted for a white shirt, black stretch pants and animal print flats.

These two really seem to be getting serious. Could wedding bells be in the near future for the former Hannah Montana star?