"My love for him wasn't fake," Tana told us yesterday after she attended the official announcement for Jake's fight versus Gibs set for Jan. 20.

Tana and Jake leave the press conference together but hug goodbye, still friends despite "taking time apart." And despite speculation that their marriage was a sham, Mongeau told us otherwise. But the whole whirlwind relationship has taken it's toll -- she told us she's focusing on "mental health" in 2020 and building an empire like Kylie Jenner! Watch and hear the OTHER revelations this YouTuber drops ...