I saw the full video of this many years ago but have since lost it. It's a pro office based scene where a brunette woman sucks off a guy (presumably her boss) in the office. At the end of the scene he unloads into her mouth and onto her face and hair:
https://www.imagefap.com/video.php?vid=273139
This shorter clip only has the blowjob and cumblast but in the longer version he fucks her first.
I imagine her going home to hubby after work and him having no idea what happened earlier!
TIA,
Bart