I had to pull something similar for an out of town friend. I was at a bar with a group who were visiting and staying at my place. One of my girl friends came over and put her arm around me, all I heard was “this is my girlfriend” so I turned to give her a kiss on the cheek and put my arm around her.

Some dude had been hitting on her and not getting the point that she wasn’t interested. Me being a taller lady, stared the guy down until he left her alone. It was an otherwise good time at the bar.