WOMEN CLAIMS THAT TI'S WIFE TINY WANTED TO HAVE A THREESOME WITH HER AND TI!!!

According to a VERY WELL PLACED SOURCE, a hispanic woman from Atlanta who is a known JUMPOFF to dozens of celebrities is writing a tell all book.She's like a SPANISH SUPERHEAD . . . a SUPER CABEZA if you will.

And in the book, she's going to be GOING HARD. Word is that the woman was TI's jumpoff. And that when Tiny FOUND OUT about her and TI's relationship, instead of getting mad - she asked to JOIN IN!!! The chick claims that that's how Tiny and TI get down - they're SWINGERS!!!

The woman also claims to have been one of Monica's BABYS FATHER'S jumpoffs. And that she and Monica were on the VERGE OF SCRAPPIN' when Monica found out the truth.

There's also going to be a LOT MORE ISH talked about . . . including the woman SUPPOSEDLY having a MANAJ with Lil Wayne - her - and TRINA!!!

This is gonna be GOOD!! Can't wait to get a copy of it . . . sounds like a real PAGE TURNER!!!

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