<human>: I [M/29] decided to take my girlfriend [F/28] of 6 months to NYC for a weekend trip.

This afternoon she decides to make plans for later on in the night with a guy, who also happens to be an ex-boyfriend. Said plans transpire last minute & she decides she wants me to accompany her. Frankly, I didn't want to. I had a long week, wanted to have a low-key dinner & call it a night to rest up for tomorrow.

She is disappointed I didn't go. I insist that she go without me, because I don't want to hold her back from NYC (it's her first time). I would have thought she'd stay, but her response was: "I don't know how to navigate the city by myself". Her response wasn't: "I'm sorry you are tired; let's have a low-key evening". Am I over reacting? Any advice?

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<bot>: Take girlfriend on a trip to NYC; she makes plans with ex-boyfriend. I don't want to join her, but she insists on going without me anyway.