Despite their odd on-and-off again relationship and getting engaged back in October 2012, the late daughter of Whitney Houston, Bobbi Kristina, and her step-brother Nick Gordon have officially tied not.

The newly-weds confirmed their secret wedding via Instagram (Jan. 9) by sharing a photo of their wedding bands with caption, "@nickgordon! #HappilyMarried. SO #Inlove. If you didn't get it the first time that is."
If you can remember... In October 2012, Bobbi and Nick called off their engagement a month after the family's disapproval for their new found love was aired on "The Houstons: On Our Own" reality show.

A close family friend told news reporters that Whitney had informally adopted 23-year-old Nick when he was 12-years-old; "he lived with the family throughout his teens." 

UsWeekly reports:

In July 2013, Brown announced that their engagement was back on and clarified the nature of their relationship. "Yes, me and Nick are engaged. I'm tired of hearing people say, 'Eww you're engaged to your brother' or 'If Whitney was still alive, would we be together or would she approve of this?'" she wrote on Facebook. "Let me clear up something, we aren't even real brother and sister, nor is he my adoptive brother. My mom never adopted him. In fact, mommy was the one who even said that she knew that we were going to start dating."

And in addition to the big announcement, is the newly-weds already planning on starting a family of their own? 20-year-old Brown also hinted on Twitter Thursday that she'll be sharing other news soon. "BIGGGG things in store guys . . . I'm so excited!" she wrote. "We bouta change the world babbbbby! #bringEmOut! #Getready! xO!"

We're hoping she's NOT pregnant! At least hold on until they are certain that their bond is unbreakable.