She said it was love. His family said it was rape. The case of the New Jersey professor and the disabled man she pleaded guilty to assaulting is headed to Netflix. In the documentary “Tell Them You Love Me,” director Nick August-Perna interviews Anna Stubblefield, the former Rutgers University professor at the center of the case, and the family of Derrick Johnson, the disabled man identified as “D.J.” in court proceedings. Per production company Mindhouse, the film, which had its TV premiere on Sky in the United Kingdom in February and premieres in June on Netflix, promises to tell “an endless…