Footage obtained exclusively by The Sun Online shows the superstar footballer grinding against then-model Kathryn Mayorga at a Sin City nightclub in 2009.
She claims he then attacked her in the penthouse suite of the Palms Casino Resort — before allegedly apologising and saying he is “usually a gentleman”.
Ronaldo, 33, vehemently denies the claims made in bombshell court documents that emerged on Saturday — branding them “fake news”.
In the video, filmed from a mobile phone, Ronaldo can be seen clasping a drink as he dances in the VIP area.
It begins by showing the then 24-year-old with his arm around Ms Mayorga at the Rain venue where she worked.
The pair then begin dancing together — before Ronaldo leans forward and squats down in front of her.
Swaying Ron then puts his arm around Ms Mayorga, then-25, as the pair dance together.
He can be seen leaning in to embrace her several times as strobe lights flash across the dancefloor.
Ms Mayorga, 34, claims the Portuguese footballer later invited her to join him in his jacuzzi before attacking her.