Late night caller

So at 12.30am a car pulled up outside my house and there was someone knocking at the door for a few minutes. It felt like a lifetime as I was just frozen to the spot. I didn't want to look out the curtains in case I was spotted so I sat tight. I dialled the police non emergency number afterwards and said I have an ex who has a PD and he turned up at my house 3 wks ago and was ringing bell for a long time- like 30 mins but I don't know if it was him or not tonight. I just wanted to log it. I've never ever known someone to knock so late. I know XN was at a concert tonight as we bought tickets to go and he prob took a friend so maybe called on the way back. I can't imagine even him doing that but who knows. My neighbours' teenage sons across the street were outside on their mopeds as I had noticed them when I shut my curtains 5 mins earlier so I will ask them tomo what they saw.

Talk about scary!