Bobbi Kristina Brown and her adopted brother Nick Gordon are pulling a Greg and Marsha Brady which is more than the usual kissing and hugging between siblings, but to Cissy Houston’s horror- the young couple are already shacking up at Whitney Houston’s estate.

Bobbi Kristina’s grandmother Cissy Houston has been trying to keep the couple apart, noting that her granddaughter has been very emotionally vulnerable since Whitney’s Houston death. According to TMZ, Cissy Houston allegedly told a close friend, “What they’re doing is incestuous.” Fueling rumors that Nick Gordon might have been Whitney’s secret biological son.  But reports have confirmed that none of the Houstons really share DNA with Gordon.

Nick Gordon came into the family when he was 12 years old and was raised as a son by the late singer.

Bobbi, 19, and Nicholas, 22, have been grieving together and the duo even got matching tattoos in memory of their mother Whitney Houston. The two still affectionately call each other “brudder” and “lil sis” even though they are now living together as a couple.