You should not hide the fact that you're married
Jake's new female coworker has been getting close to him lately.
Jake wants to introduce his coworker to some of his friends.
Jake invites his coworker to a party at his home with his friends.
Jake invites his coworker to a bar with his friends while his wife waits at home.
Jake's wife is happy to be able to finally meet his new coworker.
Jake's coworker interprets the meeting as a date, and they kiss.