21 Savage is Amber Rose's fourth rapper boyfriend, following Kanye West, Wiz Khalifa, and Machine Gun Kelly.

Is she about to make him her second rapper husband?

Amber jumped on the Web last night and suggested she would be marrying 21.

#AmberRose lovesss her some #21Savage chilee

A post shared by The Shade Room (@theshaderoom) on Aug 5, 2017 at 10:06pm PDT

She also posted a photo with a 21 Savage chain around her neck.

has arrived at #lallapalooza

A post shared by Amber Rose (@amberrose) on Aug 5, 2017 at 3:37pm PDT

When 21 and Amber first linked up, it seemed like a mutually beneficially publicity stunt  -- he was promoting his album and she promoting her SlutWalk.

[Related: 21 Savage accused of letting Amber Rose make him soft.]

But now it's seeming real-ish. Should the 24-year-old Savage allow the 33-year-old Rose to officially rob the cradle?