R&B singer Bobby Brown had no idea his daughter Bobbi Kristina Brown secretly married her 'adopted' brother Nick Gordon last month (Jan14). Gordon was informally adopted by Bobbi's mother, Whitney Houston, when he was just 12 years old. His friendship with Bobbi Kristina turned into romance and the pair married in a secret ceremony in January (14). Her father, New Edition star Brown, has now revealed he was unaware of the nuptials, telling TMZ.com, "She didn't get married... she's still single." Brown admitted he was not invited to the wedding and added, "I don't have much to say about it. If she says she is (married)... I don't know about it." The couple is reportedly planning a lavish second ceremony this summer (14).