Teyana Taylor and Iman Shumpert are getting divorced ... she secretly moved to end their marriage nearly a year ago and claims he's been a jealous narcissist during their 7-year marriage.
According to new legal docs, obtained by TMZ, Teyana filed to divorce the former NBA star way back in January ... more than 8 months before they announced a separation.
In the docs, Teyana details the demise of their marriage .