The rumors had been swirling for a while, but now there is video evidence that Whitney Houston's notoriously troubled daughter Bobbi Kristina, age 19, is doing sexy things with adopted brother Nick Gordon, age 22.

Whitney formally adopted Nick when he was 12. He and Bobbi Kristina spent their adolescence in the same home. Now they kiss and snuggle in front of Atlanta paparazzi and might be engaged. Rumor has it Nick proposed to Bobbi Kristina on March 10, less than a month after their mother's death. "She said yes."

Celebitchy notes that, though some outlets reported that Nick denied the relationship on Twitter, the tweets in question actually seem to be defend the relationship: "All the haters that don't know us or the real story [...] For the stupid ppl out there, she gave birth to 1 child. And she trusted me with EVERYTHING!!!!!!!!" He has since deleted the tweets. [TMZ, Radar, Celebitchy]