Reminded me of this vid. The girl's reaction is more of regrets & remorse compared to these other smiling whilst cheating vids here.
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https://bunkr.black/v/sabrina-full-modelpov-jxxK5r0L.mp4
https://bunkr.si/a/hgErk0dr (if 1st link doesn't work)
My understanding is this modelpov guy under the pretence of a nude modelling photoshoot; tries to gets these sexually explorative girls that show up to just model, to also agree to his advances and have sex with him too. And some of these girls are in relationships or even married.
Sabrina shows up to model and he ends up fucking her despite her initial efforts to stay loyal, say no & not cheat. But unlike the others that just agree to fuck for money, she cries through out the time they're fucking because she "loves" her bf & feels bad about it.
She even asks if he has a condom or tries to make him wear a condom (This lessen the cheating somehow, I guess).