I'm Trying to Sleep Off the Bad Feeling From This Experience

My boyfriend was upstairs asleep in bed. The lights were all off on the house, just a lamp on in the living room with me. Someone flicked my letterbox on the front door. I looked out the bedroom window and there was a man in the street. He held eye contact without blinking or looking away even for a millisecond. Thinking back I wonder if he was looking at me but talking to other person he had with him. My partner came down and started to put some clothes on. By the time I had grabbed my keys and opened the door they had gone. No sign of them at all on the road. This isn't the first time someone had tried messing with my