Cissy Houston Disgusted with Bobbi Kristina & Boyfriend

Pictures of the couple surface

Upon hearing that Bobbi Kristina and her "adopted" brother Nick Gordon are dating, Whitney Houston's mother Cissy has reacted unfavorably, according to TMZ.

The site claims that the grandmother told a close friend, "What they're doing is incestuous."

Cissy is also worried that Gordon is taking advantage of Bobbi's fragility, so she's doing everything in her power to get him legally evicted from Whitney's house where the young couple is still living together.

Though Gordon denied his and Bobbi's relationship, telling ABC News, "We're just close — just going through her mom’s passing and grieving together," pictures say otherwise; the couple seems unfazed in photos taken on Tuesday in which they're seen kissing and holding hands.   

[ALSO READ: Whitney's 'Son' Bad Influence on Bobbi?]