You shouldn't keep things from your significant other
Joey is spending time with a female coworker after hours for work purposes and knows that this would concern his insecure partner.
Joey wants to keep his partner from worrying.
Joey tells his partner upfront that they have to do a work project together.
Joey avoids telling his partner who is he with after work.
Joey's partner feel more comfortable with the situation because she was given a heads up.
Joey's partner finds out the truth from social media and loses trust in him.