Rob Kardashian took to Instagram on Wednesday to pay tribute to his one-year anniversary with fiancée, Blac Chyna. So much has happened in just one year.Rob, the new dad, posted a video montage of his relationship with his bride-to-be, sharing sweet photos and videos of themselves. He captioned the adorable clip?1 year down lol woohoooooo happy anniversary babbbbbbiiiiiieeeeee,? .