Context: I made an innocent joke about a coworker of mine who was clearly flirting with another coworker of mine. How did she flirt with him? By putting a bunch of stickers on him in front of multiple people, including myself.

This coworker of mine and I aren't super close, but for the past two years, we have had a playful relationship with each other. So the joke I made wasn't intended to make her upset, but I do take accountability for how it made her feel.

So it went like this when I was in the break room and it was just her and myself. I was impressed with her bravery to do that. I told her in a joking tone, "What a brave way to flirt with someone! I could learn a thing or two from you!" Immediately after I said that to her, she stormed off and has given me the cold shoulder for the past couple of weeks.

Since I upset her, I wanted to apologize for making the joke I did and try to mend the relationship and take accountability. I went up to her today to apologize for the situation. I told her it was wrong of me to make the joke that I did. Before I could say anything further, she cut me off and bluntly said, "You are not part of my comfort zone. You are making me uncomfortable. Leave me alone."

Was the joke I made THAT offensive? What did I do wrong?