Sources tell us Amber is dating Def Jam Records' Vice President of A&R Alexander 'AE' Edwards, who we're told she's been seeing for a few weeks now ... but she's known him since Tyga and Blac Chyna were together few years back.
We're told Tyga and BC both approve of their respective friends banging -- but don't hold your breath for a double date. It'd take more than this for Chyna and Tyga to reunite.
While Chyna and Tyga won't be dating ... we're told it's very possible their paths will cross more often now, due to Amber and AE.
BTW, if you're wondering what happened to Amber's NBA boyfriend, Monte Morris -- we're told she dumped his ass. So much for committing to an exclusive relationship.