Axl Rose and Lana Del Rey

Axl Rose and Lana Del Rey_Lana Del Rey's obsession with Axl Rose went to a whole new level last night, when the 25-year-old songstress and the 50-year-old rocker left the Chateau Marmont together.

Lana was spotted at an Axl/GnR show in Hollywood last month -- and back before she made it big, she recorded a song called "Axl Rose Husband."

The pair got into an SUV together, with Axl almost sitting in the back seat with her before hopping in the front.

Sweet Child o' Mine, indeed.