The good feelings between Sallie Mae and Green Dot are long gone now. Indeed, according to a report in Courthouse News, Green Dot has sued its former partner for $90 million in New York County Supreme Court. According to the story, written by reporter Nick Divito, who quotes extensively from the Green Dot lawsuit, the two companies had been in negotiations since late 2011 to form a partnership that allowed students to receive financial aid refunds on reloadable prepaid debit cards issued by Green Dot. This option was intended to be a part of Sallie Mae’s Campus Solutions business.