“TMZ After Dark” kept the love buzz rolling deep into the night … doubling the trouble with two party buses taking over Hollywood Saturday, led by actress Jerrie Johnson on one and singer Shelby Carter on the other!

Catch the clip — ’cause this wasn’t just any ol’ Valentine’s Day ride, it was a rolling party … with DJ Coach West blasting nonstop heat that kept the energy sky-high whether you showed boo’d up or flew solo.

Jerrie’s bus pulled up to hot spots like Power House and Beaches WeHo — and she wasn’t just hosting — she was dancing, vibing, and turning the whole thing into her personal dance floor with fans along for the ride.

Over on Shelby’s bus, she brought the full star treatment — paps onboard, red-carpet vibes, and stops at The Burgundy Room, Rainbow Bar & Grill, and Sunset speakeasy, Puzzle … where she gave a private performance of her new single “Roses,” all while Smashburger kept everyone fed.