It's 100% acting, like idk how anyone can't see it as acting. Like if she was genuinely pissed they wouldn't have done it or made it into a PPV (I sure hope not, anyways). However it's honestly a little uncomfortable how earnestly she's going at it, like it must be some weird fetish.
Also, they cut halfway so that the dude can take of his clothes and they can set up the actual BJ-ing. Nothing too deep