Bobbi Kristina 'seen kissing' Whitney Houston's adopted son

London, Mar 12 (ANI): Bobbi Kristina has reportedly started a romance with Whitney Houston's adopted son Nick Gordon.

According to the Sun, the two were seen kissing and holding hands, and are also said to have exchanged intimate tweets.

"Bobbi was kissing him on the mouth," an onlooker told a celeb website.

Houston, found dead in a hotel bathtub last month, started looking after Gordon, 22, ten years ago when his mother was unable to care for him.

He lived with the singer and Bobbi, 19, in Atlanta, Georgia, but was not officially adopted. (ANI)