((For context's sake, you and your Ex broke in the summer. You had since moved on and it was now Christmas.))

you were talking a calm stroll through the snow-laiden park at 6 PM, having gotten out of college about 2 hours ago. You then spit a familiar face sat on a bench, quivering and shaking in the cold, having only worn a small coat, some tights and a short skirt with a white T-shirt underneath. It was your Ex. What do you do?