Johnny Manziel and Josie Canseco are clearly still in the honeymoon phase ... as the couple couldn't keep their hands to themselves during a romantic getaway in Colorado.

The Victoria's Secret model shared some behind-the-scenes shots from her baecation with the Heisman Trophy winner on Tuesday ... and the lovebirds seemed to be having the time of their lives.

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Johnny and Josie have never been shy about showing off their affection for each other ... and this trip was no different, with Canseco including a video of Manziel smacking her booty during a game of pool.

The couple also shared some special snaps on the 28-year-old's birthday ... with the daughter of former MLB slugger Jose Canseco showing her followers their time out on a barn with friends and family.

Manziel -- the No. 22 overall pick in the 2014 NFL Draft -- and Canseco first sparked dating rumors back in April 2024 ... dropping hints before going Instagram official at Stagecoach with some PDA pics.

But as the two approach a year together, it appears they're not slowing down anytime soon!!