Tomorrow night, Manny Pacquiao and Floyd Mayweather will square off in Vegas with the world's welterweight championship on the line.
Thanks to the bizarre relationship between Mayweather and Justin Bieber, the Biebs will be experiencing the much-hyped fight up close, as a member of Floyd's corner crew.
And while he roots for his brutish buddy to put Pacquiao to sleep, Bieber will be taking out his own aggression in a much more passive way.
Sources say that even though they're on good terms these days, Bieber made a point of not inviting ex-girlfriend Selena Gomez to the Fight of the Century.
"He is not going to make that kind of gesture," a source tells Hollywood Life. "He would never make that grand of a gesture for her anymore."
You may be thinking, "Well, duh, they're broken up!" but apparently they've been hanging out (and allegedly hooking up), and Selena was actually expecting an invite to the fight.
It's possible that the rumors of Selena sleeping with Haze Banga that surfaced earlier this week caused Justin to change his mind about spending fight night with his ex.
We'll let you draw your own conclusions about the Biebs not wanting Selena around while he enjoys some quality time with his shirtless, sweaty spa partner.