Read between the lines

A few years back, a man asked me a question.

My answer was "No".

We haven't spoken since.

Now what I don't get is that this guy all of a sudden is trying to reconnect with me. Seriously, I have no desire to see him, talk to him or anything of the sort. I have been ignoring his attempts, but I am just so confused. It's been three years since I turned him down, no contact since, and now he decides that it's a good idea to try again? Honestly.