chubby redhead fucks a very thin geek/nerd guy behind husbands back while he is on phone

have no photo or video it is just a placeholder.
Chubby red head(MIGHT BE brunet) fucks a a thin geek/nerd guy who came to help his friend(the boyfriend/husband) with computer issues or something along those lines. He gets a phone call and the IT guy fucks the chubby girl.
they get caught in the end.
I can not find the actor or the movie