The duo was spotted posing for pictures together with Rose's boyfriend, Alexander 'AE' Edwards, while hanging in a private booth on Friday night at Def Jam's pre-Grammy party.
The event, which also included stars like: LL Cool J, YG, Alessia Cara, Jeezy and 2 Chainz, was held at celebrity hotspot Catch in West Hollywood.
Rose and Tyga have something in common other than their relationship with Blac Chyna. The model's is dating AE, who is Def Jam's Vice President of A&R and also Tyga's best friend.
Rose and Edwards began dating four months ago and made their first appearance as a couple at her SlutWalk in October. Rose previously dated 21 Savage, and has been silent since the rapper was arrested by ICE and detained in Atlanta.
As The Blast reported, Blac Chyna and Rob Kardashian are currently at war over assault allegations and child support, as well as accusations the Kardashians ruined Chyna's shot at being a reality star.