Whitney Houston's daughter, Bobbi Kristina, is officially engaged! According to Us Weekly, the 20-year-old and her on-again, off-again boyfriend Nick Gordan are planning a wedding for a second time. The two were engaged in 2012, but broke it off. The couple caused much controversy when it was discovered Whitney referred to Nick as her "son" prior to her death. Bobbi opened up about the engagement and rumors in a Facebook post on July 10. "YES, we me nick are engaged. I'm tired of hearing people say 'eww your engaged to your brother or if Whitney was still alive would we be together or would she approve of this,'" the Houstons reality star posted. "My mom never adopted him. In fact, mommy was the one who even said that she knew that we were going to start dating. My mom knows me better than any of you." Congrats to the happy couple!