Music legends Tupac Shakur and Madonna were once a thing, but no one really knew why they went their separate ways - until now.

According to TMZ, a new handwritten letter, penned by 'Pac while he was in prison, confesses that he ended things with the songstress because she was white. "For you to be seen with a black man wouldn't in any way jeopardize your career, if anything it would make you seem that much more open and exciting," Tupac writes. "But for me at least in my previous perception I felt due to my 'image' I would be letting down half of the people who made me what I thought I was." 

Tupac also admits that he hurt Madonna with this rejection, insisting that "I never meant to hurt you." The letter will be going up for auction starting July 19th, with bidding starting at $100k. You can read the letter in full here.