Lady Gaga is ready to tie the knot ... 'cause she just let the cat outta the bag on her engagement to longtime boyfriend, Michael Polansky, with one simple word.
In a now-viral TikTok ... Gaga referred to her boyfriend of several years now as "my fiancé" when introducing him to French Prime Minister Gabriel Attal at an Olympic swim event. Attal is the one who posted this video -- not LG herself -- but whoever was filming caught her saying it off the cuff.