Update

I saw the curious pair again tonight when my husband and I went to the grocery store. He was standing in the same place as before; as before, she came out and joined him when she had done her shopping, and they walked off together. This time, instead of a mask the guy had on sunglasses that covered up more than half his face, and a black bandanna over his head. My husband thinks the guy is at least in his thirties. I can never judge ages, especially men's ages; but this time I noticed the guy had stubble on his jawline, so maybe he is older than I thought. I bet they are sleeping in the haunted house down the block - they headed off in that direction.