It's been three years since Floyd Mayweather's nasty split from his ex-fiance Shantel Jackson and apparently it still ain't over. You may recall, in 2014 Shanel sued Floyd for battery, assault, invasion of privacy, defamation and false imprisonment after he posted information about her alleged abortion after their nasty split. Now, he's returning the favor claiming Nelly's boo secretly stole money from him by getting cash advances on his credit cards and going on shopping sprees. Via TMZ: According to docs, obtained by TMZ Sports, Shantel got access to Floyd's credit card accounts, and scooped cash around his house, to go on personal shopping sprees. He claims she shipped all her illicit booty to a secret location to keep him in the dark. Floyd claims Shantel

would praise him in public when he got bad press purely to gain his confidence. In the docs, his lawyer writes ... "As a result of that confidence, Mayweather, who's education ended at eighth grade, did not audit or otherwise inspect either his cash or his credit card statements for theft by Jackson." (NOTE: Floyd's reps tell us his lawyer has it wrong ... he left school in the 12th grade, not 8th.) According to the suit, Floyd only found out when a mutual friend told him Shantel had been bragging about her financial exploits. The champ's suing his ex for theft - no specific amount. Shantel is still suing him, too ... for a slew of reasons, including domestic abuse and invasion of privacy.