(TMZ) -- Mariah Carey is done with Bryan Tanaka and vice versa, and TMZ was told it's over 2 things ... his insane jealousy and her shutting the cash register drawer on his fingers.

TMZ's sources say Bryan had unbridled fury over Mariah's relationship with ex-hubby Nick Cannon. She's been chummy with him for sure, mostly for the benefit of their twins. They vacation as a family and go to dinner and parties together, sometimes without the kids. We're told it drove Bryan insane.

TMZ was told Bryan would lash back at her by flirting and even coming onto women in plain view of Mariah.

The last straw came at the Kids' Choice Awards last month, when Nick and Mariah took the twins. TMZ was told Bryan felt the display "disrespected" him and during the event he demanded she come home.

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