Bobbi Kristina & 'Brother' Confirm Their Relationship With Major PDA

March 15 2012, Published 2:30 p.m. ET

By Amber Goodhand - RadarOnline.com Reporter

Whitney Houston's daughter and 'secret son' confirmed their romantic relationship on Wednesday when they were photographed holding hands and kissing, and RadarOnline.com has the pics.

Bobbi Kristina and Nick Gordon were spotted grabbing pizza in Atlanta, Georgia, and aside from the PDA Bobbi appeared to be wearing a diamond ring on her left hand, adding validity to Star magazine's exclusive report that the two are engaged.

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“Nick proposed to Krissy on March 10, and she said yes,” a family friend told Star. “Krissy said Nick is the only person she trusts in the world. They have a very deep connection.”

Nick, 22, was taken into the family home by Whitney nearly 10 years ago and only those close to the singer knew the existence of her 'secret son', whom she treated as her own, despite never officially adopting him.

While Nick and Bobbi, 19, usually referred to each other as 'baby sis' and 'brudder,' Nick confirmed their new relationship on Twitter saying, "Yeah we got a little closer and what!!!"