unfortunately it's fake
original video is here
the woman in the original video made this post saying it was edited
https://imgur.com/gallery/yiLHNXjalso a guy on Reddit analyzed both the before and after clip and concluded it's not the same woman
"Plus her clothes are different and on the second part of the video of the "sucking" shows that she is wearing some hand accessories compare to the first part of the video which she is not wearing that makes me think that it is a different person. If so the poor bastard that posted the video is somehow using this opportunity to scam people that is looking for the "full" video."