BABY MAMA DRAMAAAAA!! Rapper Future DUMPS His Fiance . . . For CIARA . . . And Now His Babys Mama Is Putting ALL HIS BUSINESS in The Streets!!

: Rapper Future DUMPED his babys mother/fiance last week – and he tried to get her to KEEP HER MOUTH SHUT about their relationship.

And so he CALLED UP HIS BABYS MOTHERS MOTHER . . and allegedly said some very disrespectful stuff.

So his B Brittany put him on BLAST. She claims, among other things . . . that Future’s a DRUG ADDICT!!!