Some basic information:
I searched "D.C. + Divorce"

Link below:

requires six months if voluntary or court ordered separation without cohabitation. one year if separate but not agreed--both must meet residence requirement of 6 months, also if court orders separation may be valid even if living in same house.
note--but you are not supposed to be fucking around with each other during this time period, escorts are acceptable but be careful of threesomes with video cameras