My Boss' Wife is an adult visual novel about a cheating wife and her advances towards you...

You play as an overworked employee on the verge of a major career breakthrough.
After successfully landing a coveted promotion, your boss invites you to his home to celebrate.
Everything seems perfect—until you meet his gorgeous wife, whose flirtatious behavior puts your morals to the test.

Will you succumb to temptation, risking everything you’ve worked for?
Or will you stay focused on your career and secure the promotion you’ve fought so hard to earn?
The choices are yours…​

[From Itch.io]