MTO SHOCK REPORT: Beyonce CONFRONTED Jay Z . . . About CREEPING With Dame Dash’s EX-Wife . . . And Jay Z Told Her ‘F*CK YOU BEYYYYYY’!!!

: Here is a new report from E!, regarding what happened that night between Jay, Bey, and Solange:

“At the gala, Rachel was being flirtatious with Jay,” a source exclusively tells E! News. “Once everyone was at the Boom Boom Room for the after-party, her flirtations were elevated.”

“Beyoncé approached Rachel to let her know the behavior was disrespectful and she wanted her out of their lives for good,” the source goes on. “Solange came over to have her sister’s back, and things got heated with her and Rachel. Jay said some disrespectful things to Beyoncé and Solange as the confrontation was going down. That’s why all hell broke loose in the elevator and why Beyoncé just stood back and let Solange hit Jay.”

Jay chose his JUMP over his wife in the presence of SOLANGE? Yeah, that sounds like the kind of thing that woud get you a 3 MINUTE BEAT DOWN!!!

FYI – Dame Dash used to be married to Rachel Roy. That’s very interesting cause Aaliyah used to be ENGAGED to Dame Dash . . . when Jay Z started seeing HER TOO. And the day after the “elevator incident” . . . Beyonce posted a pic of her wearing an Aaliyah sweatshirt on Instagram.